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 medium punch and 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