Suggestions by @brendanphillips2

Giant Crab

as 1 Giant Crab in Ice age not for long 1 movie through all

Score: +1

Anthony Daniels

as Vernon Dursley in YGO: KIngdom Hearts Harry Potter and the Sorcerer's Stone (Live Action/Animated)

Score: +1

Geraldine Viswanathan

as Raz in Ice age not for long 1 movie through all

Score: +1

Will Arnett

as Lone gunslinger vulture in Ice age not for long 1 movie through all

Score: +1

Craig Ferguson

as Fast tony in Ice age not for long 1 movie through all

Score: +1

Patrick Dempsey

as Stu in Ice age not for long 1 movie through all

Score: +1

Melissa Joan Hart

as Mother dinosaur in Ice age not for long 1 movie through all

Score: +2

Jason Isaacs

as Rudy in Ice age not for long 1 movie through all

Score: -2

Zac Efron

as Marshall in Ice age not for long 1 movie through all

Score: 0

Jolie Jenkins

as Eunice in Ice age not for long 1 movie through all

Score: 0

Brian Hull

as Uncle fungus in Ice age not for long 1 movie through all

Score: 0

August Maturo

as Deeno in Cyberchase

Score: +1

Robin Williams

as Phil in Pokemon snow way outtagascar

Score: 0

Don Bluth

as Director in Super Smash Bros: The Ultimate Animated Series (1990's)

Score: +1

Richard Horvitz

as Ash Ketchum in Super Smash Bros: The Ultimate Animated Series (1990's)

Score: 0

David Cross

as Zeke in Ice Age (1992)

Score: +1

Jack Black

as Diego in Ice Age

Score: +1

Veronica Taylor

as Ash in Pokken dx a bug's life

Score: +1