The Beyonder

The Beyonder is villain in the same way that Galactus is "“ however, even if he isn't set on ruling the multiverse, he still acts like a big baddie. How else could he be called when he kidnapped heroes and villains alike and sent them to Battleworld?

The Beyonder is, basically, the God of a multiverse and can be called the one responsible for the creation of the Molecule Man (after all, Owen Reece became a supervillain after he accidentally accessed the Beyonder's dimension). The power of the Molecule Man was just a fraction of the Beyonder's power "“ so what can we say about that?

He has, basically, every power known in the Marvel multiverse "“ multiplied by millions, of course. So feats like destroying galaxies were nothing to him "“ even the most powerful entities in the Marvel multiverse had no chance against him (even if Death, Eternity, and others are, essentially, unbeatable).

Some might even say that even a fight against The One above All would end up with a draw"¦ So he is above anyone else you might think of.