Suggestions by @darrenjohnson

Steve Buscemi

as Gwimbly in Smiling Friends

Score: +1

Jennifer Lopez

as Sarah in Smiling Friends

Score: +1

Bill Nye

as Bill Nye The Science Guy in Smiling Friends

Score: +1

Dana Snyder

as Rotten The Snowman in Smiling Friends

Score: +3

Simon Pegg

as Mr. Frog in Smiling Friends

Score: +1

Kevin James

as Desmond in Smiling Friends

Score: +3

Henry Winkler

as Mr. Boss in Smiling Friends

Score: +1

Alexander Gould

as Darren/Me in Smiling Friends

Score: +1

Danny Pudi

as Alan in Smiling Friends

Score: +2

Jesse Plemons

as Charlie in Smiling Friends

Score: +1

Taika Waititi

as Pim in Smiling Friends

Score: +1

Robin Williams

as Wacky Quacky in CartoonMania Full Retake

Score: +1

Sebastián Villalobos

as Nachi the Coati in CartoonMania Full Retake

Score: +1

Max Greenfield

as Batty Koda in CartoonMania Full Retake

Score: -1

Brad Garrett

as Louis The Alligator in CartoonMania Full Retake

Score: +1

Billy Crystal

as Batty Koda in CartoonMania Full Retake

Score: -1

Jonathan Taylor Thomas

as Darren Johnson/Me in CartoonMania Full Retake

Score: +1

Mike McFarland

as Darren Johnson/Me in CartoonMania Full Retake

Score: -1

Anna Faris

as Amaya in KOATI(My Version)

Score: +1

Evaluna Montaner

as It's Never Too Late Singer in KOATI(My Version)

Score: +1