Killer Moth is the first villain Batgirl ever fought. His only appearance was in the Season 3 Pilot. Instead of being dressed as a moth like he is in the comics, he wears a green hat with antennas, a green suit, and a yellow cape instead of wings. In Batman '66 #11, Joker makes a joke about Killer Moth being taken down by Batman. This confirms that Killer Moth actually is a recurring enemy of Batman, even though he only appeared in the Batgirl pilot.