Suggestions by @jlfreeb

Tom Kenny

as Dog in Nickelodeon All Star Brawl 2

Score: +3

Jim Cummings

as Cat in Nickelodeon All Star Brawl 2

Score: +2

Billy West

as Ren and Stimpy in Nickelodeon All Star Brawl 2

Score: +2

Tom Kenny

as Spongebob Squarepants in Nickelodeon All Star Brawl 2

Score: +1

Bill Fagerbakke

as Frosty the Snowman in Warner Bros. Superstar Slam

Score: +1

Peter Kelamis

as Rolf in Warner Bros. Superstar Slam

Score: +1

Juan Chioran

as Snow Miser in Warner Bros. Superstar Slam

Score: +1

Jeff Bennett

as Johnny Bravo in Warner Bros. Superstar Slam

Score: +2

Mark Hamill

as Joker in Warner Bros. Superstar Slam

Score: +1

LeBron James

as LeBron James in Warner Bros. Superstar Slam

Score: +2

Tony Sampson

as Eddy in Warner Bros. Superstar Slam

Score: +5

Sam Vincent

as Edd in Warner Bros. Superstar Slam

Score: +3

Matt Hill

as Ed in Warner Bros. Superstar Slam

Score: +3

Peter Kelamis

as Rolf in Warner Bros. Multiversus

Score: +1

Bob West

as Sledge Bro in MARIO MOVIE UNIVERSE

Score: +1

Townsend Coleman

as Hammer Bro in MARIO MOVIE UNIVERSE

Score: +1

Sam the Eagle

as Muppet Fighters in Disney Magical Fight Fest

Score: +1

Mayor of Halloween Town

as Assist Summons in Disney Magical Fight Fest

Score: +5

Duffman

as 20th Century Fighters in Disney Magical Fight Fest

Score: +3

Sideshow Bob

as 20th Century Fighters in Disney Magical Fight Fest

Score: +3