Cluemaster is a fictional character in the DC Universe and an enemy of Batman. He was a criminal who left clues toward his crimes, though unlike the Riddler they weren't riddles. He is the father of Stephanie Brown, the vigilante who was known as the Spoiler and later as Robin. With several other villains, he was a member of the Justice League Antarctica and of the second Suicide Squad; he was killed in action in the latter group. The Cluemaster has appeared on the animated series The Batman, voiced by Glenn Shadix.