Grimmaw

Grimmaw  is a Unique Phasebeast found in the Tower of the Damned Level 2 in of Diablo III. In  Reaper of Souls  beta it was notable for dropping the  Demon Skin.

This monster does not appear in the released version of the game due to a bug, but as it does not participate in any achievements, this does not affect the gameplay.

Trivia

 * A rare monster with the same name exists in World of Warcraft.