Tyson

"You are not dead!"

- Tyson talking to Percy at Olympus after the second Titan War.

Tyson is a Cyclops, claimed son of Poseidon and thus is Percy's half brother. He doesn't really like Grover and other satyrs very much since he fears them; the feeling is mutual. He later befriends Grover though.

History
Tyson, the 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 demigod or half-blood. He saved the camp by destroying the bronze bulls that Percy and Clarisse La Rue could not stop alone.

In his first summer at Camp Half-Blood, Tyson made Percy a wristwatch shield with all their adventures over the quest engraved on it and also rigged it to shoot out of a watch. 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 fear him in return due his bad experiences with Polyphemus. Despite this, the two are friends and will work together to help Percy well.

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. It may be that Tyson could be older by now.

Tyson is an extraordinary metal-worker. He is sent under the sea to Poseidon's weapon armory. He works very quickly and repairs Percy's shield several times. He also forges weapons for the Olympians in case of a war breaking out between the Titans and the Olympian Gods. He also in Battle Of The Labyrinth got Briares ,the hundred handed one, to help in the Titan War.



The Sea of Monsters
Tyson makes his first appearance in The Sea of Monsters, but he is very subtly foreshadowed in The Lightning Thief (the man in the trenchcoat with one eye). He is Percy's class' community service project, he was made fun of by his classmates with Percy being his only friend. Back a 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). 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.

The Battle of the Labyrinth
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 has mended Percy's wristwatch shield.

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's 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 Kampe 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 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 appear in the book at all, but was mentioned by Annabeth to be looking for Percy.

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 black-smithing ability (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").

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 cannot 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, because the "itchy goat fur" makes him sneeze, a satyr who is also scared of him.

Appearance
Tyson is two metres 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 Posiedon'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 Sphinx.

Tyson is also known for his strength. In The Battle of the Labyrinth he freed Briares by ripping the door of it hinges with his bare hands. Also in The Sea of Monsters, he beats two bronze bulls the size of elephants, again with his bare hands.

Power/Abilities
Tyson possesses typical Cyclops and Children of Poseidon ablilities:
 * Immensely strong.
 * Works well with metal.
 * Immune to fire.
 * Superhuman hearing and can imitate voices.
 * Gets along extremely well with hippocampi (or fish ponies, as Tyson calls them).
 * Can survive Kampe's poison.
 * Can talk to Poseidon's children mentally while in water.
 * He can grow to amazing heights at will.

Trivia

 * It is unknown who Tyson's mother's name is, only that she is a nature spirit.
 * Tyson is tidier than Percy,as seen in The Battle of the Labyrinth where he was cleaning 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.
 * In The Sea of Monsters, Tyson possibly saves Grover, Clarisse, and Percy's lives by throwing a huge rock into the mouth of Polyphemus, the bigger cyclops. Polyphemus calls Tyson a traitor to his kind, causing Tyson to freeze up and say "You are not my kind."