Really good question and pretty difficult but im going with diablo

Thanos, Doctor Doom, Galactus, Juggernaut.

Magneto and Venom were redeemed.

Eric The Red

Toad

Uh..... Maybe Moleman

Green goblin.

Honestly? Mephisto. Solely for the ‘One More Day’ story.

@JackalOfDusk he didn't write the story.

I know Joe Quesada is the true villain behind the writing, but were talking about Marvel Villains and Mephisto was the one who offered Peter the deal.