Suggestions by @catpin

Kevin Michael Richardson

as Sebastian in The Little Mermaid

Score: +2

Bill Cosby

as Sir Grimsby in The Little Mermaid

Score: -2

Kim Kardashian

as Vanessa in The Little Mermaid

Score: -4

Jessica Alexander

as Vanessa in The Little Mermaid

Score: +2

Saint West

as Flounder in The Little Mermaid

Score: -2

Lil Yachty

as Prince Eric in The Little Mermaid

Score: -3

Ye

as King Triton in The Little Mermaid

Score: -1

Jane Levy

as Queen Athena in The Little Mermaid

Score: +2

Arnold Schwarzenegger

as King Triton in The Little Mermaid

Score: +3

Charlie Townsend

as Young Ariel in The Little Mermaid

Score: +6

Cate Blanchett

as Miss Bianca in The Rescuers

Score: +2

Kevin James

as Mr. Snoops in The Rescuers

Score: +1

Bob Newhart

as Bernard in The Rescuers

Score: 0

Susan Sarandon

as Madame Medusa in The Rescuers

Score: +2

Peyton List

as Andrina in The Little Mermaid (The Live-Action Remake)

Score: +1

Bill Cosby

as Grimsby in The Little Mermaid (The Live-Action Remake)

Score: -3

Natalie Portman

as Princess Leia in Disney Princesses

Score: +1

Jeffrey Dean Morgan

as Thomas Wayne Batman in Ben Affleck's Batman Universe

Score: +1

Billie Lourd

as Linda Hamilton in Actor BioPics

Score: +1