JOHNNY DEPP has popped up as a decapitated head on cult zombie drama THE WALKING DEAD. The Pirates of the Caribbean star?s famous face appeared onscreen for seconds in the 12th episode of the current season, which aired in America on Sunday night. It appeared in a scene with two other severed heads chosen for their likeness to Hilltop Colony leader Gregory?s features. ?The Gregory head is actually a cast of my head,? he told Entertainment Weekly.