Suggestions by @jonathanahnberg2
7,387 suggestions

Hynden Walch
as Starfire (cameo appearance) in Harold and the Purple Crayon (TL-JRA)

Reese Witherspoon
as Sally MacGill in Arthur (Nickelodeon Dub)

Khary Payton
as Cyborg (cameo appearance) in Harold and the Purple Crayon (TL-JRA)

David J. Fielding
as Dr. Biff Wilson in Garfield and Friends (2021 Reboot)

Fred Newman
as Porkchop in Once upon a Nickelodeon (My version)

Billy West
as Doug Funnie in Once upon a Nickelodeon (My version)

Greg Cipes
as Beast Boy (cameo appearance) in Harold and the Purple Crayon (TL-JRA)
Scott Menville
as Robin (cameo appearance) in Harold and the Purple Crayon (TL-JRA)
Howie Mandel
as Bertie Buddy Bear in Garfield and Friends (2021 Reboot)
Tara Strong
as Maguro Maki (cameo appearance) in Harold and the Purple Crayon (TL-JRA)
Tara Strong
as Timmy Turner (cameo appearance) in Harold and the Purple Crayon (TL-JRA)
Tara Strong
as Princess Melody (cameo appearance) in Harold and the Purple Crayon (TL-JRA)
Tara Strong
as Raven (cameo appearance) in Harold and the Purple Crayon (TL-JRA)
Tara Strong
as Batgirl (cameo appearance) in Harold and the Purple Crayon (TL-JRA)

Audrey Wasilewski
as Marina Datillo in Arthur (Nickelodeon Dub)
Dana Snyder
as Jellystone Snagglepuss in Harold and the Purple Crayon (TL-JRA)
Dana Snyder
as Scratch in Harold and the Purple Crayon (TL-JRA)
Dana Snyder
as Master Shake in Harold and the Purple Crayon (TL-JRA)

Charles Fleischer
as Roger Rabbit (cameo appearance) in Harold and the Purple Crayon (TL-JRA)

Tobin Bell
as Theodore in Alvin and the Chipmunks (2017-2025)