Fan Casting Killer Moth/Drury Walker in Batgirl: Through the Looking Glass

In this instance I picture them as kind of an engineer/scientist at Tetchcorp who maybe disagrees with Tetch on the mind control technology (it's kind of a secret e.t.c), is then mind controlled to assasinate Commisioner Gordon for an as yet unknown reason. Works with Batgirl and GCPD to expose Tetch.