Suggestions by @makenzietroglin

Kathleen Herles

as Dora the explorer in If (Crossover)

Jim Cummings

as Winnie the pooh in If (Crossover)

Glen Campbell

as Chanticleer in If (Crossover)

Jake T. Austin

as Diego Marquez in If (Crossover)

Donovan Patton

as Bot in If (Crossover)

Ethan Kempner

as Geo in If (Crossover)

John Finnegan

as Warren T. Rat (An American Tail) in If (Crossover)

Tino Insana

as Mr. Grouper in If (Crossover)

Sophia Fox

as Milli in If (Crossover)

Nehemiah Persoff

as Papa mousekewitz in If (Crossover)

Erica Yohn

as Mama mousekewitz in If (Crossover)

Ashleigh Ball

as Rainbow dash in If (Crossover)

Amy Green

as Tanya mousekewitz in If (Crossover)

Caroline Richardson

as Rockstar Helen Henny in The Lion King Simba's Pride (Crossover)

Glen Campbell

as Chanticleer in The Lion King Simba's Pride (Crossover)

Mel Blanc

as Marvin the Martian in If (Crossover)

Bridget Fonda

as Jenna in If (Crossover)

Kevin Bacon

as Balto in If (Crossover)

Ron Pardo

as Marvin the Tap Dancing Horse in If (Crossover)

Carroll Spinney

as Big bird in If (Crossover)