Darkon

Darkon, once known as Anti-Firebox, is an evil doubleganger from an alternate dimension where everything that is evil in Firebox' universe is good and everything that is good is evil. But now Darkon has killed off everything good and destroyed most of his universe all that is left is an evil planet, which soon will be linking to Firebox' dimension by the Devils Moon-Sun.

Anti-Firebox used to be just an evil and inverted version of Firebox, always bumping into Firebox and causing trouble, till one day. Firebox was on a mission in deep space inside a prison planet, Firebox took a magic item from the planet. A beast came out and started after him, soon on Anti-Firebox who was following Firebox started to fight him, but little did Anti-Firebox knew that the evil demon beast was in the planet with them. Firebox in need of escaping pushed Anti into a wall. Now Anti being stuck and Firebox escaping, the beast charged at him, later the planet started to blow up with negative energy. Thus making the beast infuse with Anti along with the evil within the planets core, bones popping out of Anti, blood falling out of his body. With a blast of power Anti survived and now with a new life and powers stronger than ever thanks to the beast who once was a powerful demon overlord stronger than anything in the universe, 100,000's of years ago, but his fame soon ended after being trapped inside the planet for his punishment, and stripped from his power and body and turned into a monster, till now he is one with Anti. Now Anti goes by the name of Darkon!