This page shows what every character's assist attack is. Assist attacks have your other character come on and do a move. They are activated by pressing the strong punch and forward kick buttons together. And yes, Norimaro isn't a Marvel side character, but to make this thing even, he's on their side for this page.

Akuma Tatsu maki zanku kyaku Bison Psycho shot Chun-Li Kikouken Dan Gadouken Dark Sakura Shunpuu kyaku Dhalsim Yoga fire Ken Shoryuken Mech Zangief Spinning clothesline Ryu Hadouken Sakura Shunpuu kyaku Shadow Sonic boom Zangief Spinning clothesline

Armored Spider-Man Web swing Blackheart Dark thunder (low) Captain America Charging star Cyclops Gene splice Hulk Gamma charge Mephisto Dark thunder (low) Norimaro Miracle treasure Omega Red Fierce punch Shuma-Gorath Mystic smash Spider-Man Web swing U.S. Agent Charging star Wolverine Berserker barrage