No. It is not the end. Because [adult swim] bought 13 episodes. So this one's the end. And what exactly makes this one the end, you ask? Well... remember the Annihilatrix?
EP 11 The Grate Escape
Killface (still blind) and billionaire tycoon Xander Crews (still blind, still naked, still doing business as Barnaby Jones) escape from the sweatshop to rescue Simon from the evil clutches of master criminal Torpedo Vegas. Down there in Chinatown. And everybody else winds up down there too, somehow, because of the death rabbit fights. And all.
EP 12 Penultimate Fighting
Equipped only with a map, a bag of radishes, and brand new eyes goggling about in their heads, Killface and billionaire tycoon Xander Crews (aka Barnaby Jones) attempt to rescue Simon from the evil clutches of master criminal Torpedo Vegas. Who instantly captures them. And then forces them to fight... to the death! Could this be the end?!