Suggestions by @ jlfreeb

Jim Cummings

as Cat in Nickelodeon All Star Brawl 2

Billy West

as Ren and Stimpy in Nickelodeon All Star Brawl 2

Tom Kenny

as Spongebob Squarepants in Nickelodeon All Star Brawl 2

Bill Fagerbakke

as Frosty the Snowman in Warner Bros. Superstar Slam

Peter Kelamis

as Rolf in Warner Bros. Superstar Slam

Juan Chioran

as Snow Miser in Warner Bros. Superstar Slam

Jeff Bennett

as Johnny Bravo in Warner Bros. Superstar Slam

Mark Hamill

as Joker in Warner Bros. Superstar Slam

LeBron James

as LeBron James in Warner Bros. Superstar Slam

Tony Sampson

as Eddy in Warner Bros. Superstar Slam

+5-0Score: +5

Sam Vincent

as Edd in Warner Bros. Superstar Slam

Matt Hill

as Ed in Warner Bros. Superstar Slam

Peter Kelamis

as Rolf in Warner Bros. Multiversus

Bob West

as Sledge Bro in MARIO MOVIE UNIVERSE

Townsend Coleman

as Hammer Bro in MARIO MOVIE UNIVERSE

Sam the Eagle

as Muppet Fighters in Disney Magical Fight Fest

+2-1Score: +1

Mayor of Halloween Town

as Assist Summons in Disney Magical Fight Fest

+5-0Score: +5

Duffman

as 20th Century Fighters in Disney Magical Fight Fest

Sideshow Bob

as 20th Century Fighters in Disney Magical Fight Fest