Suggestions by @alecgroskreutz1

Kira Buckland

as Bonnie Frog in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Jim Cummings

as Rasputin the Mad Frog in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Dee Bradley Baker

as Genghis Frog in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Steve Blum

as Napoleon Bonafrog in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Charlie Adler

as Dirtbag in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Fred Tatasciore

as Groundchuck in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Steve Blum

as Colonel Ch'rell in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Jennifer Hale

as Colonel Ma'riell in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Tabitha St. Germain

as Seri in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Gyaos

as Gyaos in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Biollante

as Biollante in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Michelle Ruff

as Umeko/Ninjara in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Battra

as Battra in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Mothra (Mosura)

as Mothra in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Fire Rodan

as Fire Rodan in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Rodan (Radon)

as Rodan in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

King Ghidorah (Kingu Gidora)

as King Ghidorah in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Takayuki Hattori

as Composer in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Kevin Kiner

as Composer in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5

Richard Steven Horvitz

as Dr. X in Teenage Mutant Ninja Turtles: The New Animated Series - Season 3, 4, and 5