Canon: Dissidia: Final Fantasy + Final Fantasy 3
Age: 12 years old.
Height: ~4'1" (124cm) until canon contradicts me! His helmet makes him look about a head taller, though.
Weight: Average for a 12 year old kid.
Medical Info: He's seen plenty of battles, so there's plenty cuts and healed over scrapes and burns. He's died at least once.
Eyes: Green.
Hair: Orange-blonde (the colour seems to vary across renders), spiky at the front (with beads threaded in his hair) and a long rat-tail that reaches to his waist.
Appearance: Usually looks like
this! Sometimes he'll be wearing
this instead, sans the silly belt vest (Luneth you have no taste at all). His Vatheon tattoo is on the back of his right hand.
Abilities: A good magic knight! He's not very strong, but he's definitely quick on his feet! He mainly uses a sword in his right hand (seen in appearance) but he also has a small dagger which he can use in his left. Ambidextrous, but his fighting style favours his right hand. His current spell repertoire is limited to Blizzard and Blizzaga (ice), Comet, Firaga (fireball), Flare (delicious explosions), Quake, and Thunder and Thundaga (lightning). He used to have the ability to job change, which allows him to gain certain abilities (like summoning magic) or augment his current abilities (like improving his skill with the spear), but he can't do that in Vatheon.
Background: Onion Knight's was originally 1 of 4 orphans from a somewhat isolated village in the FF3 world. He, along with the other 3 orphans then went on to become Warriors of Light and saved the world after various misadventures, which includes Cid crashing/exploding their first airship into a boulder, soldiers shooting their second airship out of the sky, putting children on the throne, killing old people and battling an almost naked not!lady with tentacles.
After that, Onion Knight was dragged into the Dissidia world to fight for the goddess of harmony, Cosmos, in endless cycles of war between herself and the god of discord, Chaos. These two gods basically yanked various heroes and villains from the Final Fantasy franchises to fight for them in this eternal war. In the 13th cycle, Onion Knight, along with the other warriors of Cosmos, managed to put an end to the cycles of war by going through ~*character development*~, letting their goddess get killed and punching Chaos in the face until he turned into a fountain of fire. Then everyone got to go home!! Except Onion Knight because Vatheon nicked him before he could.