Leo Valdez

"I try not to think. It interferes with being nuts."

- Leo to Hazel Levesque

Leo Valdez is one of the main protagonists in The Heroes of Olympus series and one of the seven heroes of the Prophecy of Seven. He is a son of Hephaestus and Esperanza Valdez. He is currently the head counselor of the Hephaestus' Cabin.

History
Leo was born in Houston, Texas to a mechanic named Esperanza Valdez. When he was little, he had a babysitter named Tia Callida, whom later was discovered to be Hera in disguise. She was watching Leo because she knew of his destiny as one of the seven in the prophecy. She tried to "kill" him by putting him in an active fireplace and by letting him play with knives. She also tried to make him poke a rattlesnake, which he refused to do. This was done to help train Leo to be strong at a young age. He once drew a picture of a flying boat with a bronze dragon head as the masthead in crayon at the age of five and just as Leo was going to sign his name on the picture, it was blown away by the wind. Tia convinced him to use his abilities to start a fire to "warm these old bones," and he ended up burning his fingerprints into the table.

At the age of eight, Leo was visited by Gaea, the Earth goddess, whom intended to break his spirit, after being notified by Medea that he would have a part to play in her downfall. Horrified, Leo tried to use his pyrokinetic abilities as defense to save his mother and himself, but lost control and started a fire, burning the mechanic shop. His mom didn't make it out, and none of his relatives would take him in, thus forcing him to be sent to several foster homes.



The death of his mother haunted Leo for years. The emotional strain caused him to run away from his different foster homes. After running away for the 6th time, Leo was sent to the Wilderness School, where he met Piper McLean, who unbeknownst to him, was a daughter of Aphrodite. When Hera switched Percy Jackson and Jason Grace, she manipulated the Mist so Leo would think Jason was his best friend, although they became real friends later on.

Leo's back-story is a very rare one, as he is the only known case of a demigod who met and befriended another demigod (Piper) before either of them ever even knew they were demigods.

The Lost Hero
Leo goes to the Wilderness School with Piper and Jason. He partners up to complete their assignment with Jason on their field trip to Grand Canyon. During the ride there, Jason says he does not remember anything and Leo thinks that he is playing a joke on him. When Coach Hedge yells at them from the front of the bus, Leo says that he can not hear him, prompting Hedge to use his megaphone. When Hedge turns on the megaphone, it sounds like Darth Vader or shouts out phrases like "The cow says moo," something that Leo had done as a prank. He seems to be good friends with them at first and seems to know Piper very well, knowing who her dad is and being able to tell that she likes to fight her own battles when she is picked on by some of the mean girls on the trip. When they are walking across the sky-walk, a storm appears around them and Leo is the one that notices the storm is only in this area and nowhere else. As the storm begins to get really bad, most of the students run away back inside with the exception of Jason, Leo, Piper, Dylan, and Coach Hedge.

Dylan reveals himself to be a ventus, or a storm spirit, and attacks the others with the help of two other venti. Leo is thrown off the sky-walk and slams into one of the canyon walls. While Jason and Piper try to fight Dylan, Hedge takes off his disguise and shows the others that he is a satyr sent to protect Leo and Piper. He jumps over the side and manages to grab Leo, pulling him back up as Jason fights off the venti. Hedge manages to get Leo back onto the sky-walk, where Dylan tries to abduct him. At the last minute, Hedge intervenes and is abducted instead.

Then Annabeth and Butch arrive and rescue them, bringing the three demi-gods to Camp Half-Blood. While on the way back, Leo makes a few jokes about how Butch is a child of the rainbow goddess, Iris, and is one of the best campers with the pegasus. When Butch threatens to toss him off the flying chariot, Leo back tracks saying that rainbows and ponies are very manly. Once arriving at camp, Leo is immediately claimed by his father, Hephaestus, and goes on a tour of the camp with Will Solace, who brings him to Hephaestus' cabin. It is here that he meets Jake Mason, the current head of the cabin. Jake is in a full body cast after trying to stop the Bronze Dragon that has started going crazy and attacking the camp. He also explains that after Charles Beckendorf's death, the cabin has been under a curse that makes any creation of the cabin turns to junk. When Leo asks if anyone at the cabin can control fire (a power he has), one of the members of Cabin 9, Nyssa, tells him that only a few people in history has ever had that power and it is considered a curse because it normally causes great destruction.



That night, at the campfire, Leo is very quiet until Rachel Elizabeth Dare gives out a quest to Jason. When Jason is about to pick which member will go with him and Nyssa volunteers herself, Leo stands up and claims that it is him that must go on the quest, offering that he also has an idea on the transportation problem. Jason says that if he can get them a way to fly, he can go with them. That night, Leo goes into the woods looking for the bronze dragon and stumbles upon a trap set up by Cabin 9, to capture it. The dragon appears in front of Leo, who is upset that the dragon does not have wings to fly. The dragon blasts him with fire, but Leo is unharmed because of his Pyrokinesis, leaving his clothes and body unharmed. After it falls into the trap, Leo takes the chance to find the control panel and fix some of the wiring inside it's head. After he fixes him up the best he can, the dragon asks Leo to climb on his back and takes him to Bunker 9 where he finds a magic toolbelt and a set of bronze wings for the dragon. He spends most of the night working on the dragon and appears in front of everyone the next morning saying he found Jason and Piper a ride, naming the dragon Festus meaning "happy" in Latin. When asked where he got the wings, he says he found them in the woods but does not mention the bunker. Jason keeps his promise, and chooses Leo as the last member of the three campers to go on the Quest to save Hera.

They begin to fly to Quebec, Canada in order to talk to Boreas in order to find out where to find Hera. Festus is not allowed in as he is a fire dragon, so Leo flips a switch and Festus turns into a suitcase (but still weighs the same, which is 60 million tons). When Khione, the snow goddess, comes down the stairs, Leo immediately falls in love with her as soon as he sees her, but she dislikes him because she can sense that he can summon fire (as Boreas' children can smell fire). He is not allowed to meet with Boreas as ice and fire would not be ideal in this situation. While his friends were gone, he had his clothes cleaned of the oil and dirt gathered on him from fixing Festus. Leo is upset that Jason and Piper made Khione mad because he was planning on making her his prom date, not knowing that she likes to collect demigods as ice statues. Jason later explains this to him, which Leo thanks him for.

After they leave, Festus is knocked out of the sky and crashes into an abandoned car factory. Leo runs off to go and find where Festus landed, which turns out to be in a row of portable loos. When he looks inside the dragon's head, it is shown the reason Festus crashed was because the wiring had frozen over, something that shouldn't of happened as it would of been too hot inside his head. While he is fixing the dragon, a face appears in the snow, sludge, and dirt and tells him to walk away from his friends and let him die. He tosses one of the toilet lids at the face and the face disappears.

When he gets back to the factory, Jason and Piper have been captured by three cyclopes lead by Ma Gasket. Piper sees Leo sneaking around and keeps the monsters talking while he creates a remote to control some heavy lifting machinery. When one of Ma's children leaves, he uses that moment to attack, taking out her son by tossing him through the roof and then crushing the other with a metal claw when he returns. Ma Gasket is also defeated when Leo uses his fire to break a chain, causing an engine to fall on top of her. When he goes to free Piper and the unconscious Jason, the dust of the cyclopes begin to reform. He rushes them back to Festus, hearing them reform inside the factory. Piper thinks that his fire powers are cool, but he still feels like they are a curse because he thinks that it was his fire that caused his mom's death. When he also tells them that children of Hephaestus are only born with fire powers when bad things are about to happen, but Jason cheers him up by suggesting that they are born with those powers because that is when they are needed most.

When they arrive in Chicago, Leo takes a whistle out of his pocket and teaches Festus to come when he is called. After that, the group follows a group of storm spirits into the sewer system where they get some rest while Leo makes some food for the other two. They follow the wind into a shopping mall, which is owned and operated by Medea. She begins to charmspeak the trio, but Piper is able to resist. Leo and Jason begin shopping for new clothes, potions, and soon forget the reason they were there in the first place. Medea soon turns Leo and Jason on each other and tries to force them to kill each other. Piper, trying to get them back to their senses, gets Medea to admit that she can see the future and told her patron about Leo being one of the seven, leading to the death of his mother. This is enough to break the spell over Leo and Jason, but Medea lets loose the Sun Dragons to fight them off while she escapes. He calls Festus who is able to fight off the other two dragons and the three fly off with Coach Hedge and the venti while the mall is destroyed thanks to Piper.

As they are flying, Leo falls asleep and has a dream of his father Hephaestus, who is using an old pirate radio broadcaster to speak to Leo without Zeus knowing. At first, Leo is very angry with him for not coming to see him sooner, but softens after seeing that his father acts the same way he does when he is nervous (fiddling with gears and small machines). His father tells him that the gods closed themselves off from their children because of Zeus' orders; partly because he felt that their children should respect them and he felt ashamed that the gods needed the help of mortals, and also because Zeus was worried that their activities on Earth were awakening Gaea. Not long after the dream starts, Zeus picks up on the dream and cuts the connection.

When Leo wakes up, Festus is crashing to the ground and he tells Jason to carry Piper away. Jason is unwilling to leave his friend, but does so anyway while Leo tries to reboot Festus. Once the dragon comes back online, it is already too late and the crash into the yard of a large house. Leo survives from the crash. When he comes to his senses, Festus is destroyed by the house's defense system (lasers) and Leo asks his father to bring his head back to Bunker 9 so he can reuse him, as that was Festus' last wish. Leo takes it very hard and acts coldly toward Jason and Piper for awhile after this, but returns back to normal after Jason says that Leo gave Festus a purpose again and these past few days were probably the best the dragon had in years.

The house turns out to belong to King Midas and his son Lityerses. At first, all seems to be going well until Midas turns Piper into gold and when he tries to fight him with his fire, he can't (the gold suppresses his powers). He is also turned to a gold statue, but is freed after Jason defeats Lityerses and washes off Leo and Piper in the river, which is freezing cold. Jason uses the storm spirits to fly them away from the house and after setting up camp, Leo makes tofu burgers for Piper and the newly freed Coach Hedge.



Not long after, they are attacked by a pack of wolves lead by Lycaon, the first werewolf. He says that their weapons will not work on him because he can only be hurt with silver, but Leo pulls some gasoline out of his belt and lights some of the wolves on fire, but it isn't enough to hold them back. He is only saved thanks to the timely arrival of the Hunters of Artemis that shoot the wolves with silver arrows. Leo falls in love with Thalia after only seeing her for a second and thinks that she is too hot to be Jason's sister, but doesn't tell him that. When the Hunters set up camp, a few hunters go to take care of Piper and Leo begins to follow them, only for Jason to ask him to stay as he begins talking to his sister. He learns about how he was separated from his sister and about Jason's mother, making him feel bad for Jason.

When Piper becomes fully healed, the group begin to travel to Aeolus' palace, but on the way up Leo asks why a wind spirit would need a bridge, to which Thalia says it is an anchor so that it doesn't fly away. Leo gets an idea from this about what Hera said about Jason being a bridge, and a bridge must connect to something. His mind begins to race so fast that his fire powers heat up his body and the bridge begins to crack. Jason manages to get Leo to the palace, but Thalia is left behind and says she will meet Jason at the wolf house.

After returning the venti and finding the location of Piper's father, Aeolus gives Leo a drawing he had made when he was only a small child and tells him that it is the key to his success. Soon after, he turns on the heroes after a voice tells him to, someone that is above the gods. Mellie, the wind nymph, helps them in their escape and when he wakes up, they are in a dinner in San Francisco and Leo has a set of new clothes (thanks to Aphrodite, who had visited Piper in her dream). Piper tells them who they are fighting (Gaea) and they should be careful from now on and avoid walking on land. They take a cab to Mount Diablo and begin to climb to the top, but Leo's feet begin to sink into the ground as Gaea is starting to wake up.

As they get closer, Leo makes a small wind up toy but isn't sure what it does, as he wasn't paying attention when he made it. When they reach the summit, Enceladus is waiting for them and summons a group of Earthborn to attack them. Leo tosses his toy into one of the construction vehicles and hops into another one, using the machine to destroy several of the monsters while Jason was fighting the giant. Soon, the vehicle is destroyed, but his wind up toy activates the other piece of equipment and it begins destroying more monsters until it too is deactivated. One Earthborn was left, but Leo had no more tricks or weapons. He lit himself on fire (he called this the blaze of glory) and charged, only for a dagger to chop the monster in half thanks to Piper.

Jason (with a lightning bolt from his father for help) defeated Enceladus and saved Piper's dad, flying back to the airport when Piper charmspeaks a pilot. Once they land and everyone is safe, they receive an Iris Message from Thalia that she found Hera at the Wolf House, so they borrow the chopper with Leo as the pilot. He is able to fly the chopper well enough thanks to his mechanical instincts, but sleet began to hammer the helicopter and they crash into the middle of a battlefield. They all retreat to the Wolf House, but Khione arrives and freezes all the Hunters, allowing the wolves and Earthborn to walk into the front door. She tells them that she was the one whispering into the ears of the gods and watching them for Enceladus. She was also the one that froze Festus' wiring, and plans on killing Jason and Piper so that the Roman campers will find their bodies and think that the Greeks have sided with the Giants. She offers Leo a place at her side because he is interesting, but he laughs her off and starts fighting her with his fire. The heat of his attacks begins to melt the ice and snow and many of the monsters run away in fear, including Khione herself as she turns to snow and disappears.

Leo then gets to work freeing Hera with an electric saw which he connected to a ventus named Tempest which was under Jason's command while Piper tries to charmspeak Gaea back to sleep to make the cage easier to break. While they do this, Jason is fighting off the newly awoken Porphyrion. Once the main support of the cage was broken, Hera broke free causing any monsters left in the house to run away or be dissolved by her true form. Porphyrion managed to get away, not wanting to fight when not at his full strength and Hera returns the demigods to camp. The trip causes Leo to throw up in one of the offering fires to the gods.



After telling everyone about their trip, Leo shows Piper, Jason, Chiron, and his cabin members the entrance to Bunker 9 and his fire powers. After searching the bunker, they find weapon ideas and designs, including a large war ship that matches the picture of the flying boat that Leo had drawn when he was a child. His cabin members elect him as Cabin Leader and make plans to make the Argo II and fly to Greece. He later attends the War Council as the leader of his cabin, and wonders why Jason picked Annabeth to sail with them. Jason then explains that if he is here at Greek Camp Half-Blood, Percy must be at the Roman camp, called Camp Jupiter and that the Roman campers aren't as nice.

The Son of Neptune
When Percy is dreaming, he sees Leo working on the Argo II when one of the engines exploded. He claims that it could take two or three days to fix and that the deadline to have the ship completed was today. When Percy, Frank, and Hazel are watching Polybotes from afar Ma Gasket, the Cyclops from The Lost Hero yells, "The camp, yes. Vengeance! The orange and purple ones destroy my home. Now Ma Gasket will destroy theirs! Do you hear me, Leo? Jason? Piper? I come to annihilate you!"

Later, when visiting Hazel Levesque's house in Alaska, Percy sees a picture of Sammy Valdez and thinks he had seen him somewhere before, but can't remember where. Hazel says he would be much older and Percy must just be imagining things. Percy then remembers his dream figuring out that Leo resembles Sammy almost identically.

Upon returning to Camp Jupiter and the defeat of Polybotes, Leo appears on a video scroll that was sent to Percy through Ella. He told them that he would appreciate it if the Roman demigods didn't shoot them out of the sky when they come to rescue Percy and start their quest. While watching the video, Hazel mistook him for Sammy Valdez and Percy remembers the picture of Sammy when looking at Leo.

Leo Valdez and the Quest for Buford


When Leo accidentally polishes Buford with Windex instead of Lemon Pledge with extra moisturizing formula, Buford runs off with two syncopators essential to building the engine for the Argo II. Leo, in a panic, asks for Jason and Piper's help to retrieve them. He explains the situation of how in about an hour, dangerous chemicals will mix in the engine blowing up the forest portion of Camp Half-Blood without the syncopators. With everyone caught up, the three friends journey into the forest in search of Buford. They then encounter Maenads on their journey and Leo feigns to be the Greek god, Dionysus, to please the Maenads. Suspicious, the Maenads figure out the truth and chase Leo and his friends until Leo comes up with an idea. Leo sends Jason to go find Buford, while he and Piper run towards Bunker 9. Once they reach Bunker 9, Leo distracts the Maenads with the idea of a party while he sets up a trap to ensnare them. Leo finally sets off the trap which drops a net (based on the original net which Hephaestus used to catch Ares and Aphrodite together) on the Maenads. Jason just in time arrives with Buford and Leo fixes the syncopater in the engine of the Argo II, thus narrowly preventing a massive explosion at Camp Half-Blood. Later Chiron and Argus arrive and decide to deport the Maenads away.

The Mark of Athena
Leo is one of the five crew mates aboard the Argo II when it arrived at Camp Jupiter. He was possessed by an eidolon and attacked Camp Jupiter and New Rome. Percy was forced to knock him out while Annabeth piloted the ship away from the Romans. Following this incident, Leo wonders if his friends could ever trust him. Frank Zhang asks Leo if his name was Sammy, but he denies. Hazel Levesque soon reunites with the others as they land in Utah. Leo informs the others that he needs supplies to get the Argo II working again. Hazel volunteers to go and over the course of the journey, they share many awkward moments, much to Leo's dismay.

The two soon encounter Nemesis who Leo thinks is his Aunt Rosa. Nemesis tells him that he would always be the seventh wheel and offers her help in taking down the proud of mighty, which she claims Gaea and the Gigantes to be the proudest of all. She gives Leo a fortune cookie and tells him that he'll open it when he needs it most, but a painful sacrifice must be required. Leo tries to return it, but the fortune cookie seals itself away in his tool pocket. Nemesis then tells Leo to meet her cursed boy in the lake, before night where he gets agitated.

Leo and Hazel then meet Echo who Leo teases by having her repeat silly phrases. Echo leads her to Narcissus and his nymph fan club. Leo notes that Narcissus is looking at his reflection with a sheet of celestial bronze, one of their items to fix the ship. The demigods manage to figure out that Echo is trying to help Narcissus by changing his ways, but has proved unsuccessful. Leo tries to talk Narcissus into giving him the metal but fails. He then comes up with a plan and stations Hazel a few feet away and Echo in the nymph crowd.

Drawing a tattoo on his arm and putting motor oil in his hair, Leo struts out toward the love struck boy and claims he is better than Narcissus. Echo repeats everything Leo states and manages to trick the nymphs that Leo is better much to Narcissus' dismay. Distracted, Narcissus declares he is better as Leo continues to insult him. Hazel, using her powers, draws the celestial bronze towards her and runs toward the ship. Narcissus takes notice of the trick and orders the nymphs to catch the demigods. Leo helps Hazel with the sheet as Arion comes toward their rescue. He tries to persuade Echo to come with them, but she decides to help Narcissus and gives him a kiss on the cheek. Leo states he'll never forget her, but his memory of her smile starts to fade as they reach the ship.

Leo grabs the supplies and manages to put the engine back together while Percy holds the nymphs back. The Argo II then heads back into the air, setting sail toward the Atlantic Ocean. He later calls a group meeting where they exchange notes on their enemies, and Hazel reveals that Rome would be destroyed in six days. Leo tells the group that he has to put down in order to fnish repairs. Ananbeth suggests someplace out of the way, but close to a city when Piper suggests Kansas. In the morning, Leo thanks Piper for not hating him after attacking New Rome the previous day. Piper then reassures she'll stick up for him and compares him to the annoying litle brother she never had. On the deck, Piper explains her vision of Bacchus and Topeka 32. Leo states he and Festus calculated the mile marker as best as they could. He stays on board to fix the hull while Piper, Jason, and Percy head into Kansas. However, the trio soon realize that his calculations were wrong and are forced to summon transportation.

Leo helps Annabeth and Piper carry Jason and Piper toward the sickbay. He then heads the ship to Atlanta and retreats below deck for another meeting. He stops blaming himself for the attack on New Rome when Piper tells him that eidolons, possessing spirits, made him do it. The group discuss about Ephialtes and Otis, twin giants, and how Romans would not follow them into the Mare Nostrum. Piper also informs that Gaea wants two of their blood to be spilled. Leo remembers how Khinoe had stated Jason's blood would taint the Wolf House forever. He then proceeds to wonder if demigod blood has that power. Percy states that Polybotes had stated Percy's blood at Mount Olympus would wake Gaea.

Piper later states that the eidolons were still in the room and calls out to them with her Charmspeak. Leo tries to laugh her attempt off, but is taken over by the eidolon along with Jason and Percy. Piper tells the spirits to swore on the Styx that they would leave the ship and never possess anyone on the ship again. The eidolons leave which results in Leo falling on the floor because Frank didn't catch him. The next day, Leo grins when Percy and Annabeth are caught together in the stables, muttering classic over and over. At another meeting, Percy explains his dream about the twins and Nico. Leo makes a theory that Nico may be conspiring with the enemy while Jason backs him up. Hazel, outraged, storms out of the room, while Leo tries to apologize. Frank stops him angrily and Leo leaves to land the ship.

Percy, Frank, and Coach Hedge embark into Atlanta while Annabeth attempts to cheer up Hazel. Jason, Piper, and Leo are interrupted from their lunch to dismebark, causing Leo to cry out if he can ever just eat a normal lunch. Percy tells him to head to Charleston where they can find a map to the Mark of Athena. Percy and Frank recount how they had met Phorcys, Keto, and the imprisonment of wild animals. They had also been imprisoned but escaped causing Leo to wonder if he's worth as much as two or three Franks. Percy then states that the map leads to the Mark of Athena causing them to wonder what it is.

Annabeth gears the conversation back to Charleston and wonders why Jason looked surprised to the name. He explains how he and Reyna had salvaged a ship, the C.S.S. Hunley for supplies, much to Leo's excitement claiming he wanted to see the Civil War artifact. Jason later explains how the Romans had fought for the Confederate side, much to Hazel's distaste. He then apologises for it and his outburst in the meeting, forcing Leo to do the same. The Roman then states he could lead a team to search for the map at the museum, which Leo volunteers for. Jason then recruits Frank, who was playing with Chinese handcuffs and couldn't get his fingers out. Leo then laughs at Frank, stating there's a simple trick for escaping. He then mocks him in Chiron's voice when Frank turned into a lizard to escape. Jason then states that Reyna had a meeting with a ghost and she was never the same. Since th ghost only met with females, Annabeth, Piper, and Hazel agree to go.

Leo informs that Roman eagles were in their way and how he could send Buford as a distraction and go the long way to Charlston. Hazel then pleads that Nico would have less time, but Leo reassures her they'll have barely enough time to reach Rome and sends Buford, with a pair of Frank's pants, on his way. The next day, Leo docks the ship at Charleston Harbor and leaves with Jason and Frank to the museum. At the museum, they are attacked by Confederate ghosts and head back to the ship when Piper sends them an Iris-message that they're heading for Fort Sumter and Romans are attacking. Frank turns into a bald eagle while Leo grabs his talons and flies toward the Argo II with Jason behind them. Coach Hedge fires the ballista and knocks the three off course. Leo is dropped and the three disappear behind the fort. Annabeth tells them to draw back as she enters Fort Sumter, successfully obtaining the map and reunites with them back on the ship.

Leo desperately tries to man the ship as Percy and Jason create massive storms to keep the Roman demigods away. Leo punches in coordinates that Percy recieved from a nereid and they set sail into the Atlantic. After putting some distance, Coach Hedge takes the wheel and Leo asks where they are heading. Percy informs that the nereid had said Chiron's brothers would help them and that Keto is bound to send one of her sea monsters their way. Jason suggests they fly, but Leo says the air stabilizer is busted. Hazel worries and states Nico only has three days left, but Leo reassures her they'll make it if something unexpected happens. Frank wonders if there's any good news which Leo replies that Buford had successfuly returned but without his pants. Annabeth and Piper tell Frank to help them take Jason and Percy, who were sapped out of strength, below deck. Leo wonders if he forgot something, but tries to dismiss it.

Hazel and Leo then stare at each other awkwardly and Leo tries to help her with her seasick. Hazel reassures Leo that Frank is a nice guy, but he is just nervous about his fire. Hazel asks Leo to remember about what had happened in the Great Salt Lake, and Leo states he'll be willing to use the fortune cookie to find Nico. Hazel rebuffs this and instead reminds him of how he handled Narcissus and the nymphs. She states that he reminds her too much of Sammy and she can show him who he was. Leo, determined to do what Frank did, grabs Hazel's hand and she shows him a flashback of her life.

Ghost Hazel and Leo watch as Hazel, bullied by Rufus, is saved by Sammy. Rufus had demanded Hazel for a diamond, but Sammy managed to take it instead, much to Hazel's horror. Leo is shocked that Sammy looks so much like him, but that he was smarter, cooler, and funnier. He figures out Sammy had stolen Hazel's heart, but he wasn't Sammy. The memory dissolves and the demigods arrive in Housten. Hazel states that this isn't from her memory, but Leo discovers that this is the spot where both of their timelines connect. An old man on the porch states Hazel's name and Hazel discovers Gaea had lied. Sammy was alive and well beyond the 1960's. Using morse code, Sammy was tapping I love you over again to Hazel. Leo's mom, carries Leo to Sammy and tells him that he is Leo's bisabuelo, great-grandfather. Sammy takes Leo and tells him he'll be his stunt double, but Hera had stated he wouldn't be alive for Hazel's great danger and pleads to tell her he was sorry for selling the diamond. Sammy claims it was a good life, but it was cursed. He never saw Hazel again. Hazel starts crying as Sammy tells Leo he has his blessing and tell her hello to Hazel for him. He returns Leo to Esperanza and says he is ready to rest soon as the scene dissolves.

Back on the Argo II, the ship lurchs to one side and Coach Hedge warns that one of Keto's monsters had found them. Leo curses himself for not changing the sonar as a skolopendra attacks. The rest of the crew head upstairs, but Percy and Jason are too tired to fight. Annabeth and Piper try to attack with their daggers as Frank shoots arrows and Coach Hedge attacks with his baseball bat. The satyr tells Leo that if he wasn't holding hands with Hazel for so long then the monster wouldn't have attacked. Frank, outraged and distracted, is knocked overboard. Leo and Hazel open a crate and take out jars of Greek fire. However, they are trapped by one of the monster's tentacles. Leo burns fire onto the tentacle and the monster drops them. Hazel and Leo throw the Greek fire into the monster's mouth as they sink underwater and slip into unconsious.

Leo wakes up in an underwater dungeon with Frank. He manages to convince him that he and Hazel are just friends which Frank believes. The two then try to figure out a way to escape and Leo covers himself in fire, much to Frank´s horror as he backs away from him. Leo puts out the fire and Frank hesitates to tell him about his weakness. Just at that moment, the two are visited by a fish-horse guy otherwise known as ichthyocentaur. Frank is taken by Bythos, the combat teacher, while Leo is interrogated by Aphros, the home ecs teacher. Leo tells Aphros his story which matches Hazel's much to Aphros' delight. Hazel reunites with Leo while Aprhos heads to find Frank. Leo manages to figure out that Frank's life is connected to a piece of firewood. Aprhos, Bythos, and Frank meet up with Hazel and Leo where the ichthyocentaurs reassure that they will take action against Phorcys and Keto. Aphros tells Hazel to visit again with Arion and to save Nico the day after tomorrow as he will be vital to the quest. Aprhos informs Leo that he needs to stay close to Frank and Hazel, because they will face mechancial difficulties and sends them on their way with brownies.

Personality
Leo is good-natured, easygoing, upbeat, energetic, funny, and loves to tell jokes, even if they aren't funny. Leo is genuinely intelligent and honest, and cares about his friends and family. He sometimes doesn't think before reacting and he enjoys pulling pranks on people, especially those who he doesn't like. Despite all this, Leo is emotionally scarred from the death of his mother and knowing that he caused the fire that killed her. Leo has been shown to have a serious side, which happens when he is angered by someone or when the situation calls for it. He is also seen building small bits of machinery and equipment and is very skilled and serious about his work.

He is also known to frequently fall in love with any beautiful girl as long as she is completely out of his league, such as in the case of Khione and Thalia. For example when Thalia, Jason and Leo were in the cave alone, Leo asked Thalia if her no-dating policy was seasonal, but she ignored him. Khione herself being a snow goddess, hates Leo as she can sense the fire within him and takes his compliments (Leo once called her hot) as insults. It is possible that this characteristic comes from his father, Hephaestus.

Near the end of the book, he starts to let go of the pain of his mother's death and learns that his pyrokinesis is a gift and tool, not a curse. He also decides to stop running from his past and he starts opening up to his friends more.

Fatal Flaw
While Leo's Fatal flaw has not been revealed, he shows feelings of inferiority. He thinks he needs ﻿to prove himself, and often feels inferior to Jason and later on, Piper.

Appearance
Leo is described by Jason to look like a "a Latino Santa's elf," with curly black hair, dark brown eyes, pointy ears, a cheerful, babyish face, a mischievous smile, and being of normal height with a slim build. He is 5' 6''. ''His most notable trait is that he has a look in his eyes that makes him look like he has taken much more caffeine then the normal limit; this could be linked to his ADHD.

Abilities

 * ADHD: Like most demigods, Leo possesses inborn supernatural battle reflexes and senses that he uses to analyze the fighting style of his opponent.
 * Dyslexia: His brain is hard-wired for reading Ancient Greek instead of modern languages.
 * Fighting skills: Despite receiving no known formal combat training, during the battle at the Wolf House, Leo displayed considerable combat skills by using two silver-tipped blacksmith's hammers to "smash any monsters that got in his way."
 * Morse Code: Leo's mother taught him Morse code, a skill he has retained, and he was therefore able to understand Festus' last wish.
 * Bilingual: Leo can speak both Spanish and English fluently, having learned both languages from his mother as a child.

Demigod Abilities



 * Mechanical Aptitude: He has amazing mechanical abilities (even for a child of Hephaestus); he can manipulate a megaphone to say "The cow says moo" in a low voice like Darth Vader's and build a working helicopter out of pipe cleaners. He was able to fix the mechanical dragon Festus in one night, even though the rest of the Hephaestus cabin thought it was beyond repair and had to be destroyed. He even added wings to the dragon so it could fly.
 * He can understand and sense machinery and has the ability to expertly operate machines he has had no prior experience with.
 * Because Leo is a demigod child of Hephaestus, he can instinctively fly or drive any mechanical vehicle expertly, including cars, trains, or helicopters.


 * Trap Detection: Leo can also sense traps, shown when he saw the hidden trap meant to catch Festus, and when he knew where all the defense mechanisms were in Midas's yard and disarmed them.
 * Pyrokinesis: He is the first demigod child of Hephaestus in hundreds of years to master their natural ability of pyrokinesis, the ability to generate and control flames and hot temperatures. At low-level ability would probably be moving a candle back and forth; if better, maybe putting out the flame with his mind or making it relight. Pyrokinesis is one of the more practiced skills like telekinesis. It is too, for warming people up or setting objects aflame. His pyrokinesis is supposedly a curse, but he is determined to interpret it as a gift. His pyrokinetic abilities can go as far as to shoot white hot flames high in the air that could burn through a metal chain link. He was able to easily keep the upper hand against the snow goddess Khione for a long time, forcing her to flee. An impressive feat given that fighting a god/goddess is "suicide," this is made even more impressive by the way Leo was close to completely overpowering Khione and this could show Leo's power is comparable to that of a child of the Big Three . However, sometimes he has trouble controlling his pyrokinesis when he gets excited or scared, beginning to heat up and smoke. He can throw fireballs/fire bolts, fire blasts and (if he concentrates hard enough), columns of fire.
 * Leo can increase the heat of his fire, and can also create walls of fire. This is the main defensive use of his powers.
 * Fire Immunity: He discovers he is fireproof (he can even survive a kerosene barrel explosion without feeling any pain, unlike Jason who feels the pain of heat but is unharmed by lightning). For example, when he was a small baby, Hera (in the form of Tia Callida, his "insane" babysitter) puts him in a blazing fireplace and he is completely comfortable. However, when he was attacked by Festus' firebreath, it did sting him slightly. Many other things like this follow.


 * Heat Sensitivity: He can sense heat, flames, and metals.

Magical Pets/Companions

 * Buford - Leo's magical three legged table.
 * Festus - A Giant bronze dragon Leo repaired in one night. Died protecting Leo, Jason, and Piper from King Midas' laser defense system.

Magical Items

 * He has a magical tool belt that he uses constantly. He can pull practically any tool he needs from the toolbelt, including the mechanical tools he needs, as well as food, medical supplies, and breath mints. The belt is seemingly endless and he doesn't know where it all comes from. However, larger items, especially things that don't have to do with mechanics, require the belt to recharge or "cool down." It is also known that big items, such as chain-saws, or magic items, like Jason's sword, Ivlivs, cannot be pulled out of the tool belt.
 * Leo's Primary Weapon is his 3-pound Club Hammer, which he summons from his tool belt from time to time.
 * Festus the Bronze Dragon was repaired and managed by Leo after his discovery of Bunker 9, used in the American Civil war as the Hephaestus bunker. He supported Leo, Jason, and Piper, all the way to Midas's mansion, where he was destroyed by lasers to save Leo, Piper, and Jason.
 * Holographic Scroll - Leo's own invention, used in The Son of Neptune to alert Camp Jupiter, that the Argo II is coming.

Thalia Grace
As soon as Leo meets a girl that is out of his league and can beat him up, he tends to fall in love with them. As soon as he met Thalia Grace, Jason's sister, he started hitting on her, but she showed no signs of even acknowledging him. Leo took this as her not wanting to show how impressed with him she was, even though she was simply ignoring him. When him and Jason explained what had happened on their quest so far, he played up his own abilities. He also asked Thalia if the "Not Dating" rule all the Hunters of Artemis had to swear to was always or just a seasonal thing. Thalia just looked at him like he had evolved from pond scum, which only made Leo like her more.

Khione
When first meeting Khione, Leo states he acted like a total fool, but couldn't help it. While Jason and Piper where upstairs talking to Boreas, Leo had his clothes cleaned, his hair brushed, and took a pack of breath mints from his toolbelt in hopes of impressing her, which ultimately failed.

When meeting Khione again at the Wolf House, Khoine tried to use Leo's attraction to her against him. Saying that he could join her and become her champion, instead of following the path the Fates had given him. Leo on the other hand rejects her because of what she had done to Festus and comments that he can't believe he thought she was hot, something Khione, the snow goddess, takes great offense to.

Hazel Levesque
Leo and Hazel are very awkward around each other. Leo thinks Hazel is cute, but constantly feels that Hazel is examining him and acts like they have met before. He states that he would remember her as the pretty girl who's paying much attention to him. He also tries to keep his distance to a small degree as he knows that she is Frank's girlfriend. However, the two keep finding themselves in awkward situations that usually causes the conflict between him and Frank.

Their connection to each other cleared up when Hazel uses her ability to show people the past, to show Leo who Sammy was. During this flashback, it is shown that Sammy is his great-grandfather and that he asked Leo to look after Hazel for him. Despite learning this information, the two are still somewhat skittish of each other.

Piper McLean
Piper and Leo have been friends for a long time, meeting at the Wilderness School. Piper trusts him enough to tell him the truth about her father Tristan McLean, who is a famous movie star. Leo knows enough about her as well to know that she doesn't like people fighting her own battles. When he was given fake memories by the Mist about Jason Grace, he had feelings of become a third wheel to Jason and Piper, something that begins to happen again when Jason and Piper start getting close all over again. Despite Piper being very beautiful, Leo never hits on her or asks her out, acting more like a brother who looks out for her. In The Mark of Athena, Piper even kisses him on the cheek after he returns safe and sound from Camp Fish-Blood, showing that she loves him as a brother.

Jason Grace
Despite their time at the Wilderness School being fake, Leo still considers himself Jason's friend. He even volunteers to go on a quest with him and goes to repair the Bronze Dragon to give them a means of transportation. Despite Leo and Jason being good friends, Leo feels jealous of Jason. People look at Jason and respect him for being the son of Zeus (really Jupiter), while he only sees himself as the lowly mechanic. He also feels left out as Jason and Piper start to reform a relationship. The only time he doesn't feel jealous of Jason is when Thalia talks to Jason about his past and how Hera had taken him away from their mother. Leo remembers that while his own life wasn't that good, his own mother wasn't possessive of Hephaestus and only wanted Leo to know him.

Trivia

 * He is currently the only known living son of Hephaestus who has been given the gift of Pyrokinesis.
 * He can get the ingredients for tacos and tofu burgers out of his magical belt.
 * Because of his pointy ears and Jason Grace calling his dad Vulcan instead of Hephaestus, Leo claims that he doesn't even like Star Trek; a reference to Spock, one of the main characters of Star Trek who is a Vulcan.
 * He is the only one of the seven to not have lived in California at any point in life.
 * The name Leo is a zodiac sign which has fire as it's element.
 * Leo, Frank Zhang, and Hazel Levesque are the only known demigods that can speak two languages (that have nothing to do with them being a half-blood), as he can speak Spanish and Morse Code.
 * Leo looks almost exactly like Sammy Valdez, Hazel's old friend from the 1940's. This is because Sammy is his great-grandfather, as stated in The Mark of Athena.
 * In Latin, Leo means "Lion."
 * While Leo is a son of Hephaestus, he shares many traits with children of Hermes, including elfish ears, a mischievous smile, and a love for practical jokes.
 * It is said that, even by demigod standards, Leo is seriously ADHD.
 * Leo is the only known demigod who can go toe-to-toe with Khione and not freeze to death.
 * Leo Valdez and the Quest for Buford is in his point of view.