Suggestions by @liquidcarlton

Dave Bautista

as Bardock in RWBY: Volume 10

KSI

as Paul Phoenix in Tekken Live Action Movies

Mini Jake Paul

as Kuma II in Tekken Live Action Movies

Jake Paul

as Kuma I in Tekken Live Action Movies

Godzillasaurus

as Godzilla in MAH Hero Academ

Kerry Shawcross

as Choreographer in MAH Hero Academ

Miles Luna

as Writer in MAH Hero Academ

Kevin Bacon

as Producer in MAH Hero Academ

Oingo Boingo

as Composer in MAH Hero Academ

James Cameron

as Director in MAH Hero Academ

Mike Myers (Full Cat in the Hat suit)

as Mirko in MAH Hero Academ

Haruhi Suzumiya

as Overhaul in MAH Hero Academ

Cinder Fall

as Cinder Fall in MAH Hero Academ

Paul McCartney

as Twice in MAH Hero Academ

Daniel J. D'Arby

as Darby in MAH Hero Academ

Smoker

as Kurogiri in MAH Hero Academ

Dawn of the Mummy

as Shigaraki in MAH Hero Academ

Jack Black (But with an Alvin and the chipmunks voice filter)

as All for one in MAH Hero Academ

Bill Murray (Space Jam)

as Lady Nagant in MAH Hero Academ

Finn Wolfhard

as Toga in MAH Hero Academ