I think I already saw this somewhere...

All Bosses - Pocket Dimensional Clash 2

Ankylossaur preview

Mega Man X joins the party

X-Men’s Iceman Takes on the Hydra

Old Oak Tree from Castle of Illusion

New boss: Old Oak Tree, from Castle of Illusion

CPU CO-OP in Aventers United Battle Force

New boss: Mr. Negative

Power Stone Edward Falcon in all bonus stages