Unforgivable Mask's appearance is that of a muscle-bound figure with a panda face as a mask. He wears black swim briefs and boots. Unlike Pandaman (and others with a similar style), who appears to have an authentic panda's head, Unforgivable Mask actually appears to be wearing a mask.
- Unforgivable Mask is seen in Color Walk 2 and also under the dust jacket of Volume 46 inside the snake's mouth.
- Unforgivable Mask makes a cameo in One Piece: Unlimited Cruise, behind a hole in the Thousand Sunny.