You were on the big battlefield stage with the smash roster when a portal opens and the My Hero Academia verse flies in

Aizawa: Class. Stay put. We don’t know where we are. Prepares his scarf for battle

Bakugo: TEACH LETS JUST KICK THEIR ASS! His hands crackle

Luigi: Flinches at Bakugo’s voice Don’t y-yell man…

Sonic: Soooo why are you guys here, and who are you?

Wolf: Ooh~ Are we going to fight? Grins

Aizawa: No-

Bakugo: YES. YES THE HELL WE ARE!

Class 1-A: YEAH!