He looked hairy, with a tattered version of Shaggy's clothes. The tatters were magically repaired whenever he reverted back to normal.
He became wild and fierce under direct moonlight, but reverted to Shaggy with no memory of what he did as the werewolf whenever the moon was behind a cloud.
Powers and abilities
He had super-strength, including being able to break through a brick wall.
The Richie Rich/Scooby-Doo Show
Insert details here. (Moonlight Madness)