Sinistro Boy Fiend
Jack Biceps
3 issues
Sinistro Boy Fiend, also known as Jack Biceps, has appeared in 3 comics from Charlton since 1968. The most recent catalogued appearance dates to 2017. Most catalogued appearances come from The Encyclopedia of Super Villains.
Real Name
Jack Biceps
Hero Name
Sinistro Boy Fiend
Publisher
First Appearance
Powers
Flight, Magic, Shape Shifter, Gadgets, Technopathy
Latest Issue Appearances
Appears alongside
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