Question: When did the Marvel character played by Bill Milner first appear in a comic book?
Sentence (from "Snapper Carr"): "Young Justice" was cancelled in May 2003, and he became associated with the governmental organization Checkmate, a role revealed when the character played a small but important role in the 2007-2008 limited series comic book "52 Aftermath: The Four Horsemen".
Relevant evidence: No