Suggestions by @dmcmusiclover

Sandy Cheeks

as Princess Peach in Nickelodeon Smash Bros

Tigerclaw

as Incineroar in Nickelodeon Smash Bros

Rocko Rama

as Fox McCloud in Nickelodeon Smash Bros

Swiper The Fox

as Fox McCloud in Nickelodeon Smash Bros

Danny Phantom

as Luigi in Nickelodeon Smash Bros

Patrick Star

as Luigi in Nickelodeon Smash Bros

Reptar

as Yoshi in Nickelodeon Smash Bros

Boots

as Diddy Kong in Nickelodeon Smash Bros

Darwin (The Wild Thornberrys)

as Donkey Kong in Nickelodeon Smash Bros

Poof

as Kirby in Nickelodeon Smash Bros

SpongeBob SquarePants

as Mario in Nickelodeon Smash Bros

Tick-Tock the Crocodile

as King K. Rool in Disney Smash Bros

King Louie

as Donkey Kong in Disney Smash Bros

Stitch (626)

as Pikachu in Disney Smash Bros

Pluto

as Duck Hunt Dog in Disney Smash Bros

Russell (Up)

as Ness in Disney Smash Bros

The Beast (Prince Adam)

as Bowser in Disney Smash Bros

Pete the Cat (Disney)

as Bowser in Disney Smash Bros

Elsa

as Rosalina in Disney Smash Bros

Cinderella (Disney)

as Rosalina in Disney Smash Bros