A vile variety of mechnical demon. They're spreaders of disease and poisons, of pestilence and blight. They're drawn-out suffering incarnate. The tank on its back contains enough toxic chemical to kill a million men, it's said.In-game description
The TOXIKEMIKILL is the Stage 4 magic form of the Ruin group.
TOXIKEMIKILLs were removed from the game before it was released, so although their data still exists, they do not appear anywhere.