Chiron

In Greek mythology, a wise centaur (half man, half horse), son of the Titan Kronos by the sea nymph Philyra. He was the tutor of the heroes Jason and Achilles, and the god of medicine Asclepius.

Chiron was instructed by Apollo and Artemis in hunting, medicine, music, gymnastics, and prophecy.

After Heracles accidently wounded him with a poisoned arrow, he pleaded to be relinquished from his immortal state, and Zeus transformed him into the constellation Sagittarius.