Some of the Marvel villains are Abomination, Dr. Octopus, Loki, and Dr. Doom.
Galactus
A few of the DC and Marvel villains are, Dr. Doom, DreamSlayer, Sabretooth, Lord Havoc, and Magneto.
Batman has the largest for DC & Spider-Man has the largest for Marvel.
Elmo
Hyperstorm
Squirrel Girl - her power to beat villains off-panel is unparalleled!
i think its venom or dr. doom
I believe the most likely place you'll find that would be in the marvel ultimate alliance series of games, since no other game actually exploits many marvel heroes and villains.. except the ones pertinent to the folklore of the hero of the game..
All the Marvel villians and heros who have fire powers include Firebird, Witchfire, Firebrand, Vocana, Legion, Surfur and Match.
In the Marvel universe, Thanos is often regarded as one of the strongest villains due to his immense strength, intelligence, and ability to wield the Infinity Gauntlet. Other powerful villains include Galactus, Dormammu, and Apocalypse.
Famous? Probably Venom or Magneto. Powerful? Galactus or Apocalypse. :)