Yondu "Udonta" Quill was a Centaurian, leader of a key faction of the Ravagers and adoptive father to Peter Quill. When Quill betrayed the Ravagers and stole the Orb for himself, Yondu led the hunt for his former ally.
Yondu's Ravagers turned against their former captain and put their trust instead in Taserface. With the help of Rocket Raccoon, Udonta got his revenge against the mutineers and destroyed his own ship. Udonta went to help Star-Lord in his battle against Ego.
He died at the end of Guardians of Galaxy 2, but then he got better.