Suggestions by @ricardor2000

Bret Iwan

as Mickey Mouse in The New Looney Tunes

Score: +5

Bill Farmer

as Goofy in The New Looney Tunes

Score: +3

Dan Castellaneta

as Homer Simpson in The New Looney Tunes

Score: +1

Jim Cummings

as Taz in The New Looney Tunes

Score: +2

Charles Martinet

as Mario in The Super Mario Bros. Super Show (2019)

Score: +13

Anthony Russo

as Writer in G-Force, Battle of the Planets

Score: +1

Anthony Russo

as Producer in G-Force, Battle of the Planets

Score: +2

Joe Russo

as Director in G-Force, Battle of the Planets

Score: +1

Bryan Cranston

as Jamie Hyneman in Tested

Score: +1

Simon Pegg

as Adam Savage in Tested

Score: +1

Robert Downey Jr.

as Colonel John "Hannibal" Smith in The A-Team

Score: +1

Owen Wilson

as Lieutennant Templeton "Face" Peck in The A-Team

Score: 0

Mars Crain

as Sergeant Bosco 'B.A.' Baracus in The A-Team

Score: +1

Jay Pharoah

as Larvell Jones in Police Academy

Score: +2

John Cleese

as Professor Porter in Tarzan

Score: +1

Oscar Steer

as Jack in Jack And Beanstalk

Score: -1

Emilia Clarke

as Goose that lays golden eggs in Jack And Beanstalk

Score: +1

Millie Bobby Brown

as Magic Harp in Jack And Beanstalk

Score: +2

Rowan Atkinson

as Dealer in Jack And Beanstalk

Score: +2