Suggestions by @ggouchang

Aaron Brown

as Peter Shaposhnikova, an 8-year-old boy in Peter and the Wolf (2027 Disney animated film)

Score: +1

Aaron Brown

as Hero Boy in Tom and Jerry: The Polar Express

Score: 0

Brendan Schroeder

as Thing #1 & #2 in The Cat in the Hat Comes Back

Score: -4

Shaun Dixon

as Thing #1 & #2 in The Cat in the Hat Comes Back

Score: -4

Aaron Brown

as Thing #1 & #2 in The Cat in the Hat Comes Back

Score: +1

Alex Brightman

as Betelgeuse in Beetlejuice: Recalled To Duty

Score: -2

J.K. Rowling

as Creator Of The Map in James Potter The II and the New Map

Score: 0

Rupert Grint

as Ronald Weasley in James Potter The II and the New Map

Score: 0

Tom Holland

as Tom Morvolo Riddle in James Potter The II and the New Map

Score: +2

Emma Watson

as Hermione Granger in James Potter The II and the New Map

Score: +1

Daniel Radcliffe

as Harry Potter in James Potter The II and the New Map

Score: +1

Aaron Brown

as Albus S. Potter in James Potter The II and the New Map

Score: +1

Shaun Dixon

as Albus S. Potter in James Potter The II and the New Map

Score: -3

Kylie Kuioka

as Lily L. Potter in James Potter The II and the New Map

Score: 0

Shaun Dixon

as James Potter II in James Potter The II and the New Map

Score: 0

Brendan Schroeder

as James Potter II in James Potter The II and the New Map

Score: +1