The image of Michael Rooker as Yondu was posted by James Gunn on his twitter. This is the first image we have of Yondu.
Yondu's appearance in the movie is a bit mysterious as the character comes from a different timeline in the comics. His part in the movie was apparently written in by James Gunn to give Rooker a part in the film.
Gunn seems to be adding to mystery by not providing a clear image of Yondu and instead blanketing him in shadow.
Yondu will not have a giant fin on attached to his head as comic counterpart does, but he does have a mohawk.
He will also use an arrow that he can control by whistling as comic counterpart can.
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