Exo-Creepr is a villain getting revenge on the miners who kill too many creepers (how much is too much? I DON'T KNOW!!!!!) He was a normal person, living a normal creeper-killing life, when he thought "Hey. I think I'll become a creeper and kill other miners because it's not nice to kill creepers before they explode. EXPLODING IS THEIR LIFE!". So he tried to become a creeper, nearly killed himself, and is now depending on the exoskeleton he built to survive. He leads an army of creepers that were created in his creeper factory (he's some sort of evil genius) and is getting his revenge on all creeper killing miners. He has the power to explode in a HUGE explosion, and live through it, although he doesn't want to risk it. MWA HAHAHAHAHAHAHAHAHA!