Killer Moth is a supervillain appearing in comic books published by DC Comics, usually as an adversary and dedicated original foil personality of Batman. Like Batman, he has no superpowers and relies on his technical equipment, including a Mothmobile and numerous gimmicks. Killer Moth originally wore a garish costume of purple and green striped fabric, with an orange cape and moth-like mask. In Underworld Unleashed, Killer Moth is transformed into the monster Charaxes with superhuman abilities.

Gotham Underground is a nine-issue limited series from DC Comics, written by Frank Tieri, with art by Jim Califiore.