Cluemaster is a failed game-show host turned super-villain who leaves clues to his crimes, operating in Gotham City as an enemy of Batman. His daughter with Crystal Brown is Stephanie Brown, who rebels in an attempt to atone for her father's crimes and eventually becomes Batgirl. He has been a member of the Injustice League, Justice League Antarctica and the Suicide Squad. Cluemaster was created by Gardner Fox and Carmine Infantino, first appearing in Detective Comics #351. (1966)

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