John O'Neil
John O'Neil
2 series
42 issues
John O'Neil has appeared in 42 comics since 1993. The most recent catalogued appearance dates to 2025. Most catalogued appearances come from Teenage Mutant Ninja Turtles.
Real Name
John O'Neil
Hero Name
John O'Neil
Publisher
First Appearance
Powers
Intellect
Latest Series Appearances
Appears alongside
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