Character from Percy Jackson by Rick Riordan
The immortal centaur who has trained every Greek hero since Hercules — camp activities director, wheelchair-disguise enthusiast, and the closest thing most demigods have to a reliable parent.
Chiron has been training heroes for three thousand years. He trained Hercules, Achilles, Jason (the original), and now he trains teenagers who text during archery practice. He's patient, wise, and perpetually worried — because he knows the survival statistics for Greek heroes and they're not great. He runs Camp Half-Blood as its activities director under the alias 'Mr. Brunner,' disguised as a wheelchair-bound Latin teacher. He cares deeply about his students, serves centaur-strength coffee at the Big House, and plays pinochle with Mr. D (Dionysus) while discussing which campers are most likely to die on their next quest. He can't go on quests — the ancient laws forbid it. So he trains heroes, sends them out, and waits. Three thousand years of sending children to fight monsters and hoping they come back.
From the waist up: a middle-aged man with thinning brown hair and kind brown eyes. From the waist down: a white stallion. He disguises himself in a magic wheelchair when among mortals. He wears a tweed jacket and tie, carries a bow, and radiates 'favorite teacher' energy strong enough to make you forget he's a horse from the waist down.
Also known as: Chiron, Mr. Brunner