Tyson

"You are not dead! I like it when you are not dead!"

- Tyson talking to Percy after finding him in The Son of Neptune

Tyson is a Cyclops, a son of Poseidon, and Percy's half brother. He is currently the general of the Cyclopes army for Poseidon

History
Tyson is a son of the Greek god of the sea, earthquakes, and the father of horses (which reflects on Tyson's personality because he loves horses and hippocampi), Poseidon and a nature spirit. He is a young Cyclops (only seven years old in human years) who tries to be the best little brother to Percy possible and make his family proud of him.

He met Percy at school, Meriwether College Prep, where he had been admitted as a school project, so that the students could be exposed to a homeless child and record his changes and whatnot. The Mist obscured mortals' view of Tyson's one eye, with the Mist making them think he had two. Percy simply assumed he had two eyes because was unable to look up past Tyson's mouth and nose, since he usually had peanut butter stuck in his teeth, making him rather hard to look at. Tyson has multiple severe scars on his back that were caused by a Sphinx in the alley where he used to live. He saves Percy's life in their school gym (burnt down due to fireball throwing Laistrygonian giants). Annabeth also gave him permission to get through the magical borders of Camp-Half Blood because he is technically not a half-blood. He saved the camp by destroying the bronze bulls that Percy and Clarisse could not stop alone. It's presumably because of Tyson that Percy was left alone during most of his year at Meriwether, since most monsters wouldn't want to mess with him.

In his first summer at Camp Half-Blood, Tyson made Percy a shield with all their adventures over the quest engraved on it and also made it to shoot out of a wristwatch. This is another favorite item of Percy.

Tyson is a Cyclops, who are almost all half-brothers of Percy Jackson. They are considered "accidents" and generally looked down upon. Though Percy is at first disgusted to realize that he was related to him in The Sea of Monsters, he completely changes his opinion by the end of the book. As such, Tyson is closer to Percy than any of his brethren, and Percy even once announced that Tyson was his "baby brother" when he won the chariot race due to Tyson's help in constructing the equipment. Because of being a Cyclops, heat does not hurt him. Tyson also likes peanut butter and is madly in love with Annabeth. He fears Grover due to the fact he seems to be allergic to him. Grover also fears him in return due his bad experiences with Polyphemus. Despite this, the two are friends and will work together to help Percy.

Tyson is the age of Percy in human years, but as mentioned, he is 7 years old in Cyclops years. He acts like this age and speaks like this age so that is why it may occur that he is different than Percy even though they are the same age. Tyson could be older by now.

Tyson is an extraordinary metal-worker, being able to make Percy's shield and a chariot. He is later sent under the sea to Poseidon's weapon armory, where he makes weapons for the Olympians. He works very quickly and repairs Percy's shield once - when the Manticore damaged it. He also forges weapons for the Olympians in case of a war breaking out between the Titans and the Olympian Gods. Also, in the Battle Of The Labyrinth, he got Briares, the Hundred Handed One, to help in the Titan War.

The Sea of Monsters
"He's more like a half-brother on the monstrous side of the family. Like... a half-brother twice removed or something."

- Percy

Tyson makes his first appearance in The Sea of Monsters, as Percy's friend at school. He is Percy's class' community service project, he was made fun of by his classmates with Percy being his only friend. Back at Camp-Half Blood he was claimed by Poseidon, much to Percy's dismay. He goes on a quest through The Sea of Monsters in order to find the Golden Fleece, with Clarisse, Annabeth, and Percy. He was in the engine room of the CSS Birmingham to keep it running while entering the Sea of Monsters, but the ship exploded, with Percy and Annabeth thinking he was killed (forgetting the fact that Cyclopes are immune to fire) and Percy feeling great guilt about it. He later appears back on Polyphemus' Island, helping to fight Polyphemus and distracting the flesh-eating sheep while the others grabbed the fleece.

The Titan's Curse
Tyson only appeared in various cameo appearances. One time being in an Iris message between him and Percy, because Tyson was still in Poseidon's underwater forges making weapons, and the book was landscaped in winter, so he couldn't come to camp. He attempted to hug Percy through an Iris message. Then when Percy sent Tyson another Iris Message and he told Percy that he was coming to camp the next summer.

The Battle of the Labyrinth
""Now we can eat peanut butter sandwiches and ride fish ponies. We can fight monsters and see Annabeth and make things go BOOM!""

- Tyson after meeting Percy again

Percy comes back to Camp Half-Blood to find Tyson already there cleaning the room for inspection (With a couple perks too: A metal flock of horses, undersea plants that glow and scrubbed anemone that gleam in the light) and had mended Percy's shield. He greets Percy with a rib-crushing bear hug.

Annabeth leads the quest into the Labyrinth, and is very excited since this is her first time leading one, and one of her dreams (along with being an architect). She broke the rule of only two companions on a quest, by choosing Percy, Grover, and Tyson. Annabeth descends into the Labyrinth with Percy, Grover, and Tyson to find a way to stop Kronos' evil forces from entering the borders of Camp Half-Blood by searching for its inventor, Daedalus. As they go into the Labyrinth, they face many dangers. Tyson then finds Briares the Hundred-handed one, but is disappointed to find out he is afraid of Kampê and refuses to fight. They split up and Tyson follows Grover who goes a different direction in search of Pan. They all reunite and flee the Labyrinth after the help of Rachel and Daedalus (or Quintus).

The fight begins the Camp is in danger and all seems lost until Briares and Daedalus arrive, Mrs. O'Leary and Quintus to help fight, once again all seems lost until Grover unleashes the cry of Panic, greatly disrupting — but not ending — the Battle.

The Last Olympian
Tyson meets with Percy again when he wakes up in Poseidon's palace after the explosion of the Princess Andromeda. He seems to want to fight in the battle and is sad because he has to work in the armory. When Percy leaves he states "Good-bye brother don't let monsters kill you dead!" When Tyson and a few other Cyclopes are having lunch, the armory wall explodes and a dozen cyclops are blown in. Before he can help them, they turn to silt. He grabs a club from a fallen cyclops and charges, saying an unintelligible phrase, as he has peanut butter in his mouth. It is known that he meant to say, "For Poseidon!" but, he said "PE-TAH-BUH" instead. The other cyclopes in the armory, because they did not understand him, used the war cry, "PEANUT BUTTER!" Poseidon states that is a "strange battle cry." After this event, Poseidon comments that he is a good fighter, and lets him lead the force of Cyclopes that helped defeat Typhon, the gods' greatest enemy. Rainbow the Hippocampus asks for Tyson when he comes to take Percy to camp.

On Olympus, Tyson is promoted to general of the cyclops army, and given a new club, which he calls "Stick!"

The Lost Hero
Tyson didn't make an appearance, but was mentioned by Annabeth to be looking for Percy.

The Son of Neptune
Tyson is searching for Percy along with Mrs. O'Leary﻿. He appears twice in Percy's dream, once when he is searching and wonders why Percy's scent is getting farther away. The second time, Percy tells Tyson to find a red harpy named Ella and then go to Camp Jupiter to wait for him. Tyson rescues Ella and protects her while they make their way to the camp. When Percy returns, he whistles for Mrs. O'Leary and the three appear. During the reunion, Tyson and Ella show some affection for each other and Tyson tells Percy that she is really pretty. Tyson then agrees to join the fight and puts on a Camp Jupiter banner so that the Romans won't destroy him like the rest of the evil cyclopes. He even managed to knock out Ma Gasket, who was very confused by the Greek Cyclops. He also offers to help Percy fight Polybotes, but Percy claims he will be fine. Tyson is later scene celebrating the victory in the mess hall with Ella. He was eating peanut butter and jelly sandwiches almost as fast as the camp could make them. The next day during the Senate meeting, Tyson sees the Argo II coming and goes out to meet it.

Personality
Tyson is a very gentle, sweet, and childish Cyclops (He's also known for crying). He finds Annabeth and Rachel pretty, and when Percy, or Annabeth are in danger, he uses his bare strength and fire-proof ability to save them because he loves them very much. He has a natural affinity as a black-smith (as with all Cyclops), and he loves working on things. He is a softie at heart and loves peanut butter, Annabeth, horses, and Hippocampi (or as Tyson calls them "Fish Ponies"). Despite his childish nature, Tyson is actually very smart.

He and Grover don't seem to get on very well together, largely due to Grover's fear of Cyclopes, but he helps Grover look for Pan in The Battle of the Labyrinth.

Fatal Flaw
Tyson acts a little childlike, but he can figure things out very quickly (eg. when Percy tries to tell him the reason why he can't tell anyone about Nico being the son of Hades in the Battle of the Labyrinth). He is a little clumsy and at first Percy was afraid to bring him on a quest in The Sea of Monsters because of this. He can easily become upset and cries a lot. Sometimes he forgets his own strength (eg. when he hugs Percy, who feels as if his ribs are breaking). Also, he is terrified of Grover, a satyr who is also scared of him, because the "itchy goat fur" makes him sneeze.

Appearance
Tyson is two meters tall, and very broad shouldered, and has very messy brown hair. He has one large brown eye, but when he isn't at Camp he is hard working in Poseidon's forges, and it looks like he has two because of the mist. He is known for not brushing his teeth. He has scars on his back done by a Sphinx.

Tyson is also known for his strength. In The Sea of Monsters, he beats two bronze bulls the size of elephants with his bare hands. Also, in The Battle of the Labyrinth he freed Briares by ripping the door off its' hinges with his bare hands "as if it was made of wet clay."

Abilities
Tyson possesses typical Cyclops and Children of Poseidon abilities:
 * Immensely strong.
 * Works well with metal works.
 * Immune to fire.
 * Sharp hearing and can imitate voices.
 * Gets along extremely well with hippocampi (or fish ponies, as Tyson calls them).
 * Can survive Kampê's poison.
 * Can talk to Poseidon's children mentally while in water.
 * Can breathe underwater
 * Gifted with extra delicate hands, he made the complex wristwatch of Percy with his big hands.
 * In The Sea of Monsters, during a talk he was having with Percy, he seemed to know exactly what Percy was feeling. Thus, Percy wondered if Tyson (and all other Cyclopes) could read emotions like satyrs could.

Poseidon
Poseidon is very protective of his son, much to Tyson's dismay. While Tyson wants to help his father fight Oceanus in The Last Olympian, Poseidon keeps him in the forges to make weapons. Poseidon does however allow him to help in the fight against Typhon and even leads the charge.

Percy Jackson
Percy and Tyson knew each other before they knew they were related as they went to the same school. Percy would try and protect him from bullies, but would never look at Tyson directly. After they found out they were related, Percy felt a bit ashamed of his new brother and wondered how they could be related. It wasn't until the ship they were on exploded that Percy began to think of Tyson as a brother. Tyson had tried to fix the ship by trying to fix the engine, but the ship exploded and Tyson was separated from Percy and Annabeth, Percy thinking he had sacrificed himself to save them. When they are reunited, Percy is happy and over the series, Percy treats him like a real brother and has come to accept even his bear hugs.

Ella
In The Son of Neptune, Tyson protects Ella when they go to Camp Jupiter to wait for Percy. When Percy arrives he notices the two blush around each other. Tyson also calls her pretty when he is talking to Percy. Later, Ella calls June 24th a good day and starts saying good events that happen on that day, one of them being Tyson.

Trivia

 * It is unknown who Tyson's mother is, only that she is a nature spirit; as usual as where Cyclopes like him are born.
 * Tyson is tidier than Percy, as seen in The Battle of the Labyrinth where he was cleaning up Cabin Three's mess and when Percy said he didn't have Tyson cleaning after him when he and Annabeth were inspecting the Cabins in The Last Olympian.
 * Tyson is fond of pegasi, hippocampi, which he call fish ponies, and other horses. He even has his own hippocampi, Rainbow.
 * Tyson is not a half-blood; according to Annabeth, half-blood means "half-human, half-god."
 * Peanut butter is his favorite food.
 * In The Sea of Monsters, Tyson realizes he is Percy's brother when Percy tries to explain that the Greek gods still exist and Poseidon is his father.
 * He has many scars on his back as seen in The Sea of Monsters that came from the Sphinx.
 * He seems to idolize Briares.
 * In The Son of Neptune, he takes a liking to Ella, a harpy, and blushes when Percy mentioned her.