Suggestions by @sunnyjade

Bumper Robinson

as Wilton Wildebeest in CartoonMania: Season 1 (1998-99)

Score: +1

Kath Soucie

as Yolanda Ringtail in CartoonMania: Season 1 (1998-99)

Score: +1

Richard O'Brien

as Peter Peacock in CartoonMania: Season 1 (1998-99)

Score: +1

Garry Chalk

as Mr. Yippee Goldbird in CartoonMania: Season 1 (1998-99)

Score: +1

Jeff 'Swampy' Marsh

as Paul Wingman in CartoonMania: Season 1 (1998-99)

Score: +1

Kath Soucie

as Ninja Girado in CartoonMania: Season 1 (1998-99)

Score: +1

Alyson Stoner

as Ninja Girado in CartoonMania: Season 1 (1998-99)

Score: -1

Jim Cummings

as Giambattista Piranha in CartoonMania: Season 1 (1998-99)

Score: +1

Maulik Pancholy

as Ernie Rodentski in CartoonMania: Season 1 (1998-99)

Score: +1

David McCormack

as Winston the Mosquito in CartoonMania: Season 1 (1998-99)

Score: -2

John Leguizamo

as Tyler Woodchewer in CartoonMania: Season 1 (1998-99)

Score: +1

Charlie Adler

as Firm in Cartoonmania

Score: +1

Charlie Adler

as Firm in CartoonMania: Season 1 (1998-99)

Score: +1

Carlos Alazraqui

as El Toro in CartoonMania: Season 1 (1998-99)

Score: +1

Jeff Bennett

as Earl F. Checkerfield in CartoonMania: Season 1 (1998-99)

Score: +1

Jeff Bennett

as Denzel in CartoonMania: Season 1 (1998-99)

Score: +1

Charlie Adler

as Orlando Ostrich in CartoonMania: Season 1 (1998-99)

Score: +1

Keith Ferguson

as Lampo in CartoonMania: Season 1 (1998-99)

Score: +2

Craig McCracken

as Producer in The New Numberblocks

Score: +1

Joe Elliott

as Director in The New Numberblocks

Score: +1