Electrocutioner

The Electrocutioner is a villain in the DC Universe and is primarily an enemy of Batman.

Original
The first Electrocutioner was Lester Buchinsky's unnamed brother. Lester himself would later take on the identity.

Unnamed successor
The second one used he electric suit to take down criminals however Batman fought him because he disapproved of his extreme methods. He was later killed by the hero Vigilante.

Lester Buchinsky
Lester became the third and main one who fought Batman many times and teamed up with other criminals.

Televison History
He first appears in the show Justice League Unlimited in the episode "Grudge Match" as part of Roulette's Meta - Brawl. He later makes a few cameos as part of the Legion of Doom. In the series finale "Alive" he is shown siding against Luthor during the mutany and is killed in the end.

Video Games
He later appears in the loosely-movie-based Batman game as a boss working along side Killer Moth and Firebug. It is later revealed that they are all working for the Joker.