Suggestions by @alexz

Hannibal Buress

as Four Arms in Omni-Kid

Benjamin Plessala

as Heatblast in Omni-Kid

Dee Bradley Baker

as SixSix in Omni-Kid

Oscar Isaac

as Tetrax in Omni-Kid

Zach Woods

as Auto in Omni-Kid

Brian Tyree Henry

as Punch in Omni-Kid

Jeremy Ray Taylor

as Speed. in Omni-Kid

Lil Rel Howery

as Roll in Omni-Kid

Nicolas Cage

as Shard in Omni-Kid

Metro Boomin

as Weed in Omni-Kid

Nicolas Cantu

as Magno in Omni-Kid

Shamon Brown Jr.

as Buzz in Omni-Kid

Micah Abbey

as Brain in Omni-Kid

Abbi Jacobson

as Burn in Omni-Kid

Andy Samberg

as Blaze in Omni-Kid

Jackie Chan

as Azmuth in Omni-Kid

Jim Rash

as Psyphon in Omni-Kid

Liev Schreiber

as Vilgax in Omni-Kid

Benjamin Plessala

as Axel in Omni-Kid

Duke Cutler

as Axel in Omni-Kid