The original Killer Moth was a prisoner identified only by his prison number, 234026. While in prison, he read a newspaper article about Batman and decided to set himself up as the "anti-Batman", hiring himself out to the criminals of Gotham City to help them elude capture by the police. Upon his release, he used the hidden proceeds of his crimes to build a Mothcave, modeled on the photos of the Batcave in the newspaper article he read.
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Other Personas of Drury Walker
History
Drury Walker was an unsuccessful criminal who no one took seriously. He adopted the false identity of Cameron van Cleer and the persona of Killer Moth to fight Batman.
Killer Moth set up a team called "the Misfits," comprising third-string Batman villains such as Catman and Calendar Man. They made another kidnapping attempt on Bruce Wayne and other prominent citizens. This team proved unsuccessful, turning against Moth when they realized he planned to kill the hostages.
Charaxes
Drury was one of the villains who sold their souls to the demon Neron. He asked to become feared, and he was metamorphosed into a moth-like monster called "Charaxes". As Charaxes, Walker resembled a vaguely humanoid, giant brown moth. He consumed humans and spun cocoons in which to keep his prey.
Later on, Charaxes began laying hundreds of eggs, all of which hatched into duplicates of Drury Walker. Charaxes despised his progeny, but was unable to destroy them. Following his capture, these duplicates were taken into government custody. During an argument between various bodies as to what should be done with them, they attacked a scientist and were ultimately killed.[citation needed]
At around the same time, Oracle was confronted by a criminal named "Danko Twag", who claimed to be the real Killer Moth (the one she had defeated), and that Drury Walker had been an impostor. During a rant in which he claimed they were going to be a team, she captured him in an energy cell and he seemingly disintegrated.
Finally, Charaxes was ripped in half by Superboy-Prime during the Battle of Metropolis, and presumed deceased.