Suggestions by @lucarba

Brian Tochi

as Swagger in The Transformers

Score: +1

Jay Baruchel

as Rawhide Kid in Marvel Cinematic Universe

Score: +1

Sofia Carson

as Black Mamba in Marvel Villainesses

Score: +1

China Anne McClain

as Izira in LoliRock

Score: +1

Ross Lynch

as Lev in LoliRock

Score: +1

Megan Mullally

as Aunt Ellen/Ellira in LoliRock

Score: +1

Christopher Eccleston

as Gramorr in LoliRock

Score: +1

Joe Swash

as Sonny the Well Tank Engine in Thomas the Tank-Engine and Friends: Celebrity Voices

Score: +2

Diane Guerrero

as Jagwar in Teenage Mutant Ninja Turtles

Score: +2

Andy Richter

as Scratch in Teenage Mutant Ninja Turtles

Score: +2

Alex Hirsch

as Scumbug in Teenage Mutant Ninja Turtles

Score: +2

Darius McCrary

as Sergeant Bananas in Teenage Mutant Ninja Turtles

Score: +2

Chord Overstreet

as King Lionheart in Teenage Mutant Ninja Turtles

Score: +2

Leon Thomas III

as Hot Spot in Teenage Mutant Ninja Turtles

Score: +2

Darren Barnet

as Usagi Yojimbo in Teenage Mutant Ninja Turtles

Score: +2

Mauro Castillo

as Fishface in Teenage Mutant Ninja Turtles

Score: +2

James Sie

as Tattoo in Teenage Mutant Ninja Turtles

Score: +2

Alex Brightman

as Wyrm in Teenage Mutant Ninja Turtles

Score: +2

Roger Craig Smith

as Mutagen Man in Teenage Mutant Ninja Turtles

Score: +2

Michael Ironside

as Zanramon in Teenage Mutant Ninja Turtles

Score: +2