Courtesy Marvel.fandom.com:
Nathan Cooper was transformed into Megaman by an alien which saved his life after he almost died in an accident. Falling into a black lake which sent him one million years into the future and became mutated and disfigured as a result, and was encountered an entity which kept him prisoner.
He sought revenge on his nephew, Caps Cooper, for supposedly abandoning him (in fact, Caps had believed him dead) and fought Nova. He was horrified when he discovered that the alien, which he believed had been keeping him prisoner, was actually in love with him.
He went with Caps to see his ex-wife, and found that she had already moved on. He began attacking his wifes new partner before being interrupted by Nova, and they fought through the Coney Island Fun House before circling back to his old home.
As he began fighting Nova again, the Protector appeared declaring its love for him. Cooper begged his wife to say that she loved him but she kept silent, while the Protector took him back to its time.
He was captured by the enigmatic alien, the Stranger, and was imprisoned in the Stranger's Laboratory World for the alien to study him. He remained there until freed by Overmind.
