Religion: not determined yet
Alter Ego: Basil Karlo
Other Names: The Terror; Clayface I; Ultimate Clayface
First Appearance: Detective Comics (vol. 1) #40 (June 1940): "Beware of Clayface"
First Appearance (Additional Details): (seen and named in one-panel "cameo" in "Coming Next Month" preview) Detective Comics (vol. 1) #39 (May 1940): "The Horde of the Green Dragon!"; (full) Detective Comics (vol. 1) #40 (June 1940): "Beware of Clayface"
Super? (Has Super Powers/Special Abilities/Technology): Yes
Number of Appearances: 60
Comic Book Appearances: 49
TV, Film Appearances: 10
Video Game, Computer Game Appearances: 1
Enemy of: Batman
Note: based loosely on Boris Karloff
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