Suggestions by @darrenjohnson

Will Smith

as Zack Zebra in CartoonMania Full Retake

Score: +1

Tara Strong

as Tanya Tigress in CartoonMania Full Retake

Score: +1

Hayden Panettiere

as Penny Bleat in CartoonMania Full Retake

Score: +1

Gilbert Gottfried

as Zacky Quacky in CartoonMania Full Retake

Score: +1

Jim Conroy

as Macky Quacky in CartoonMania Full Retake

Score: +1

Patrick Stewart

as Jacky Quacky in CartoonMania Full Retake

Score: +1

Michael Cera

as Sylvester Nelvana in CartoonMania Full Retake

Score: -1

Will Arnett

as Max in Darren and his friends meet The Princess and The Frog

Score: +1

Alexander Gould

as Victor Virus in Darren and his friends meet The Princess and The Frog

Score: +1

Zach Hadel

as Glep in Smiling Friends

Score: 0

Garry Shandling

as Tommy Stickfigure in CartoonMania Full Retake

Score: +1

Phil LaMarr

as Jimmy Stickfigure in CartoonMania Full Retake

Score: +1

Jennifer Hale

as Jojo Violet in CartoonMania Full Retake

Score: -1

Haley Joel Osment

as Timmy Tiger in CartoonMania Full Retake

Score: -1

Tara Strong

as Jojo Violet in CartoonMania Full Retake

Score: -1

Tara Strong

as Jojo Violet in CartoonMania Full Retake

Score: +1

John Goodman

as Stanley the half man half Camel in CartoonMania Full Retake

Score: +1

Nola Klop

as Tanya Tigress in CartoonMania Full Retake

Score: -1

Jimmy Fallon

as TV Reporter in Smiling Friends

Score: +1

Zach Hadel

as Director in Smiling Friends

Score: +1