Lunatik vs Thanos
I totally forgot about Lunatik until earlier Khell mentioned him.
Powers/Abilities: Lunatik possesses superhuman strength (on Thor's level (Class 100). With the sharp teeth in his huge mouth he can bite off the head of a human being. He is a nearly immortal being (already 600 million years old) and grew a resistance against any kind of natural or cosmic force over the years. It was also nearly impossible to harm him with any kind of weapon. It didn't seem that he needed air to survive either. He is still getting stronger, faster and more intelligent as he is in a steady state of mutation.
Mind you, he beat the shit out of Surfer almost as easy as Thanos did.