Suggestions by @guccigang

Pauly Shore

as Impossible Man in Marvel Cinematic Universe

Score: +1

Jay Harrington

as Reed Richards in The Fantastic Four

Score: -25

Tom Holland

as Lionel Cosgrove in Dead Alive (2022/Remake)

Score: +3

James Corden

as Best LGBTQ Actor in 2022 myCast LGBTQ Awards

Score: -5

Kush Papi

as Marv Merchants in Home Alone

Score: 0

Jake Paul

as Johnny Storm in The Fantastic Four

Score: -9

J.K. Simmons

as Boss in Jack Brown Genius (2023)

Score: +1

Jacob Elordi

as Martin in Jack Brown Genius (2023)

Score: -1

Zendaya

as Eileen in Jack Brown Genius (2023)

Score: +1

Robert Downey Jr.

as Elmer in Jack Brown Genius (2023)

Score: +1

Tom Holland

as Jack Brown in Jack Brown Genius (2023)

Score: +1

James Maslow

as Human Torch in Fantastic Four

Score: 0

Don Lee

as Red in Pineapple Express (Asian Cast)

Score: +1

Pauly Shore

as Sonic the Hedgehog in Sonic the Hedgehog but it's miscasted

Score: +2

David Dobrik

as Harry Osborn in The WORST Spider-Man Movie

Score: +4

Bryce Hall

as Spider-Man in The WORST Spider-Man Movie

Score: +4

Keemstar

as J. Jonah Jameson in The WORST Spider-Man Movie

Score: +4

Ethan Klein

as Uncle Ben in The WORST Spider-Man Movie

Score: +3

Kevin Hart

as Thimbletack in The Spiderwick Chronicles (2018)

Score: +1

Chris Pratt

as Hogsqueal in The Spiderwick Chronicles (2018)

Score: +2