Kill-o-Watt was a small-time bank robber, a supervillain whose body is apparently made of pure electricity. Despite his ability to summon minor electrical beings as allies, he was easily subdued by Freedom Watch. However, displaying a heretofore unknown ability to dissipate into thin air (or, more likely, into some nearby electrical current), he escaped before he could be arrested. When he next surfaced, he had joined forces with Chernobyl.
Most recently, Kill-o-Watt appeared to come to the aid of The Clique during their failed attempt to kidnap model Todd Roberts.