Suggestions by @randomcaster

Homer Simpson

as Dan Castellaneta in Best character each of these actors played

Fred Jones (Scooby-Doo! Mystery Incorporated)

as Frank Welker in Best character each of these actors played

Wakko Warner

as Jess Harnell in Best character each of these actors played

Disgust (Inside Out)

as Mindy Kaling in Best character each of these actors played

Princess Ariel

as Halle Bailey in Best character each of these actors played

Alexander Hamilton

as Lin-Manuel Miranda in Best character each of these actors played

'Weird Al' Yankovic

as Daniel Radcliffe in Best character each of these actors played

Dwight Schrute

as Rainn Wilson in Best character each of these actors played

Bloodsport (DCEU)

as Idris Elba in Best character each of these actors played

Polka-Dot Man (DCEU)

as David Dastmalchian in Best character each of these actors played

Peacemaker (Chris Smith)

as John Cena in Best character each of these actors played

Harley Quinn (Margot Robbie)

as Margot Robbie in Best character each of these actors played

Jordan Belfort

as Leonardo DiCaprio in Best character each of these actors played

Spider-Punk

as Daniel Kaluuya in Best character each of these actors played

Ember Lumen

as Leah Lewis in Best character each of these actors played

Batman

as Kevin Conroy in Best character each of these actors played

Samurai Jack

as Phil LaMarr in Best character each of these actors played

Sideshow Bob

as Kelsey Grammer in Best character each of these actors played

Bender Rodriguez

as John DiMaggio in Best character each of these actors played

Dr. Two Brains

as Tom Kenny in Best character each of these actors played