Suggestions by @125256

Kevin Eastman

as Producer in Teenage Mutant Ninja Turtles: The New Animated Series

Tom Holkenborg

as Composer in Teenage Mutant Ninja Turtles: The New Animated Series

The Looney Tunes Show

as The Looney Tunes Show in Cartoon Network & Nickelodeon Shows by Adult Swim

Julian Dennison

as Tommy in Dr. Seuss' Horton Hears A Who! (2020s)

Ian McDiarmid

as The Narrator in Dr. Seuss' Horton Hears A Who! (2020s)

Francesca Capaldi

as Jessica in Dr. Seuss' Horton Hears A Who! (2020s)

Anniston Price

as Katie in Dr. Seuss' Horton Hears A Who! (2020s)

Margot Robbie

as Mrs. Quilligan in Dr. Seuss' Horton Hears A Who! (2020s)

Summer Fontana

as This green deer, I can't find her name anywhere in Dr. Seuss' Horton Hears A Who! (2020s)

Jason Schwartzman

as Morton the Mouse in Dr. Seuss' Horton Hears A Who! (2020s)

Jackson Robert Scott

as Rudy Kangaroo in Dr. Seuss' Horton Hears A Who! (2020s)

Jeffrey Dean Morgan

as Yummo Wickersham in Dr. Seuss' Horton Hears A Who! (2020s)

Sarah Paulson

as Jane Kangaroo in Dr. Seuss' Horton Hears A Who! (2020s)

Jason Mantzoukas

as Vlad Vladikoff in Dr. Seuss' Horton Hears A Who! (2020s)

Jack Dylan Grazer

as Jojo O'Malley in Dr. Seuss' Horton Hears A Who! (2020s)

Ben Stiller

as Ned O'Malley in Dr. Seuss' Horton Hears A Who! (2020s)

Julia Roberts

as Sally O'Malley in Dr. Seuss' Horton Hears A Who! (2020s)

Andy Samberg

as Horton The Elephant in Dr. Seuss' Horton Hears A Who! (2020s)

Jharrel Jerome

as Miles Morales in Marvel's Spider-Man

Maureen Brennan

as Aunt May in Marvel's Spider-Man