American comic book artist, illustrator, and writer who has worked with many Marvel Comics characters and created comic book adaptations of L. Frank Baum's Oz books.
His first professional work was for Devil's Due and UDON.
He has drawn covers for various books including Spider-Man and Iron Man.
He has been in a relationship with singer Casey McCauley and they have a son.
He worked as an artist on a series of novels by Neil Gaiman.