Cluemaster
Comic book character
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The Cluemaster is a supervillain appearing in American comic books published by DC Comics, commonly as an adversary of the superhero Batman as well as a recurring enemy of Tim Drake, the third Robin. Cluemaster first appeared in Detective Comics... Wikipedia
Played by: Ethan Embry
Movie: Spoiler Alert
Notable aliases: Arthur Brown and The Reformer, Aaron Black
Creators: Gardner Fox and Carmine Infantino
First appearance: Detective Comics #351 (May 1966)
Team affiliations: Injustice League; Justice League Antarctica; Secret Society of Supervillains; Suicide Squad