Suggestions by @akg129

Riki Lindhome

as Thing 1 in A Seussical

Score: +1

Riki Lindhome

as Thing 2 in A Seussical

Score: +1

James Monroe Iglehart

as The Cat in the Hat in A Seussical

Score: +1

Sean Giambrone

as Mantenna in untitled He-Man and She-Ra series

Score: +1

Melissa Joan Hart

as Scorpia in untitled He-Man and She-Ra series

Score: +1

David Alan Grier

as Skeletor in untitled He-Man and She-Ra series

Score: +1

Sean Giambrone

as Skeletor in untitled He-Man and She-Ra series

Score: +1

Nika Futterman

as Shadow Weaver in untitled He-Man and She-Ra series

Score: +1

Grey DeLisle

as Shadow Weaver in untitled He-Man and She-Ra series

Score: +1

James Arnold Taylor

as Snagglepuss in Jellystone

Score: +1

James Arnold Taylor

as Yogi Bear in Jellystone

Score: +1

James Arnold Taylor

as Boo Boo Bear in Jellystone

Score: +1

Christy Carlson Romano

as Frankie Stein in untitled Monster High/Ever After High crossover movie

Score: -3

Busta Rhymes

as Cyborg in The LEGO Batman Movie 2

Score: +1

Margot Robbie

as Penelope Spectra in Danny Phantom

Score: -1

Margot Robbie

as Penelope Spectra in Danny Phantom

Score: +2

Whoopi Goldberg

as Sneetches in Dr. Suess's the sneetches computer animated movie

Score: +1

Grey DeLisle

as Beaker in Muppet Babies (2018) (recasting)

Score: 0

Nika Futterman

as Chef in Muppet Babies (2018) (recasting)

Score: -1

Cree Summer

as Baby Bop in Barney the Dinosaur (Horror Film)

Score: +2