The Strongest Villain Passing By

Liang Mu died at the gunpoint of the robbers, but was unexpectedly resurrected by the gods. "Thank you to the gods for saving my life." "You're welcome. In return for resurrecting you, you can help me travel to other worlds to help those protagonists." "???" I traveled to another world in a state of confusion, but I was still the same person, without any system or superpowers, etc... I seemed to have traveled to my own self in this world. Aren't the sum of superpowers, magic, celestial arts, technology, and abilities from different worlds the most powerful force? So here comes the question, who should I be who is more powerful than the protagonist?