In the "Heroes/Villains" expansion pack, create a team with the following players to unlock the corresponding bonuses:
TEAM - BONUS Arch Rivals (Venom,Spider-Man, Dr. Doom, Mr. Fantastic) - + 5 Critical Chance. Freaks (Wolverine, Nightcrawler, Hulk, Cyclops) - + 5 health regain. Met His Maker - (Doctor Strange, Doctor Doom, Magneto, Hawkeye) - +6 to all traits Natural Leaders (Dr. Doom, Mr. Fantastic, Dr. Strange, Cyclops, Storm, Magneto Nick Fury) - +5% Experience Rogues Gallery (Dr. Doom, Sabretooth, Venom. and Magneto) - 10% reduced power cost Shaba Ultimates (Cyclops, Nightcrawler, Hulk, Hawkeye, Dr Doom, Sabretooth, Venom, and Magneto) - 15% boost to total energy West Coast Avengers (Hawkeye, Iron Man, Human Torch Moon Knight, Secret Wars Spider-Woman) - 5% Damage inflected as Health Gain.
Also, along with the current X-Men members in the game, Nightcrawler, Cyclops, Sabertooth, and Magneto can also be used in conjunction with other X-Men to form the "X-Men" stable and get the same +15% Max Energy Boost.
-The following original team bonuses can have substitute characters with the Heroes/Villains expansion, as follows. For example, Sabertooth is playable in "Bad to the Bone". Hawkeye, at least, is also interchangeable with Moon Knight or Colossus.
Agile Warriors (Spider-Man, Spider-Woman, Deadpool, Elektra, Nightcrawler) Avengers (Captain America, Thor, Iron Man, Hawkeye) Bad to the Bone (Luke Cage, Ghost Rider, Wolverine, Blade, Hulk, Sabretooth) Bruisers (Captain America, Ms. Marvel, Thing, Luke Cage, Colossus) Classic Avengers (Hulk, Thor, Iron Man, Captain America, Black Panther) Defenders (Dr. Strange, Silver Surfer, Iceman, Luke Cage, Hulk) Martial Artists (Black Panther, Moon Knight, Nick Fury, Captain America, Daredevil, Nightcrawler) Marvel Royalty (Black Panther, Dr. Strange, Storm, Thor, Dr. Doom) Natural Leaders (Mr. Fantastic, Captain America, Nick Fury, Storm, Dr. Strange, Cyclops, Magneto, Dr. Doom) New Fantastic Four (Spider-Man, Ghost Rider, Wolverine, Hulk, Luke Cage) Rogues Gallery (Venom, Dr. Doom, Magneto, Sabretooth) Weapons Specialists (Blade, Captain America, Deadpool, Elektra, Nick Fury, Hawkeye, Nightcrawler) X-Men (Cyclops, Iceman, Storm, Colossus, Wolverine, Nightcrawler, Magneto, Sabretooth)