Characters: Apocalypse, Beast, Bishop, Cable, Captain America, Carnage, Colossus, Cyclops, Deadpool, Doctor Doom, Doctor Octopus, Elektra, Gambit, Hobgoblin, Hulk, Human Torch, Invisible Woman, Iron Man, Jean Grey, Jubilee, Magneto, Mister Fantastic, Mystique, Omega Red, Professor X, Psylocke, Punisher, Rhino, Rogue, Sabretooth, Silver Surfer, Spider-Man, Spider-Woman, Storm, Thing, Thor, Venom, War Machine and Wolverine.
There are also two legitimate variants: Longshot Roll with the Punches (1 on second line) and Scarlet Witch Sorceress Slam with the Fighting icon - which would make a complete set 271 cards.
Characters: Banshee, Black Cat, Blob, Daredevil, Doctor Strange, Domino, Ghost Rider, Iceman, Juggernaut, Longshot, Mandarin, Mister Sinister, Mojo, Mysterio, Namor, Scarlet Spider, Scarlet Witch, She-Hulk, Silver Sable, Strong Guy, and Super-Skrull.
Characters: Black Widow, Brood, Doc Samson, Hawkeye, Morbius, Morph, Nightcrawler, Quicksilver, Sentinels and Vision.
DC also introduced the allies, a new type of universe card, as well as Hero and Villain codes, a concept which was not used extensively in the game and never adopted by any Marvel OverPower expansion.
Characters: Azrael, Bane, Batman, Brainiac, Catwoman, Commissioner Gordon and the GCPD, Cyborg, Doomsday, Eradicator, Hazard, Huntress, Joker, Killer Croc, Knockout, Lex Luthor, Metallo, Metropolis SCU, Nightwing, Parasite, Penguin, Poison Ivy, Ra's al Ghul, Riddler, Robin, Steel, Superboy, Supergirl, Superman, Thorn, and Two-Face.
New characters: Forge, Green Goblin, Hank Pym, Kingpin, Nick Fury, Red Skull, Shadowcat, and White Queen.
(JLA stands for Justice League of America) - Released early 1997, introduced the new tactic cards.
Characters: Aquaman, Black Canary, Blue Beetle, Booster Gold, Captain Atom, Captain Marvel, Darkseid, Doctor Polaris, The Flash, Green Arrow, Green Lantern, Hawkman, Martian Manhunter, Mister Miracle, Neron, Orion, Parallax, Ray, Trickster, and Wonder Woman.
New Characters: Acolytes, Alpha Flight, Enforcers, The Hand, Hellfire Club, Hydra, Inhumans, Kree, Marauders, Morlocks, New Warriors, Reavers, Serpent Society, Shi'ar, Starjammers, and X-Babies.
New Characters: Absorbing Man, Baron Mordo, Beta Ray Bill, Black Panther, Bullseye, Captain Marvel, Dazzler, Deathlok, Dracula, Falcon, Havok, Heroes for Hire, Ka-Zar, Leader, Maggott, Marrow, Mole Man, Psycho-Man, Puppet Master, Cecilia Reyes, Scorpion, Shang-Chi, Superpatriot, and the Thunderbolts.
Characters: Backlash, Curse, The Darkness, Fairchild, Grifter, Grunge, Killrazor, Malebolgia, Overtkill, Ripclaw, Savage Dragon, Shadowhawk, Spawn, Stryker, Tiffany, Velocity, Violator, Witchblade, and Zealot.
New Characters: Bastion, Callisto, Captain Britain, Cerebro, Crux, Deathbird, Donald Pierce, Goblyn Queen, Grey King, Landslide, Maverick, Mercury, Multiple Man, Phoenix, Polaris, Rapture, Sabra, Shadow King, Spider-Girl, Sunfire, Taskmaster, Thunderbird, Typhoid Mary, X-Man, X-Men: Original Team, and Xaos.