Yondu Udonta is a fictional character in the Marvel Comics universe. He first appeared in Marvel Super-Heroes #18 in 1969. Yondu is a member of the alien race known as the Centaurians and has been depicted as both a hero and a villain.
Yondu was originally introduced as a member of the original Guardians of the Galaxy team in the 31st century. He is a skilled archer and carries a special Yaka arrow that he controls through whistling. The Yaka arrow is made of a special material that can pierce almost anything and return to Yondu when he whistles for it.
In the modern Marvel Universe, Yondu has been depicted as a pirate and mercenary who travels the galaxy with his crew. He has also been shown as a member of the Ravagers, a group of space pirates who were introduced in the Guardians of the Galaxy movie.
In the Marvel Cinematic Universe, Yondu is portrayed by actor Michael Rooker. He appears in the Guardians of the Galaxy films as Peter Quill's surrogate father and a member of the Ravagers. Yondu's character arc in the films is focused on his relationship with Peter and his eventual redemption.