Werewolves, also known as Wolfmen and Skinwalker, are violent man-beasts, part man and part wolf. They are traditionally mythical monsters, although they have been shown to exist on multiple occassions. Their transformation is usually caused by the turning of the full moon, although it has been triggered in other ways. Anthony Lupus fought Batman calling himself "The Werewolf," an Olympic athlete given a transforming serum by Professor Milo.
Anthony Lupus was created by Len Wein and Neal Adams, first appearing in Batman #255 (1974).
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