Lacey Chabert

Eliza Thornberry (voice)

Tom Kane

Darwin (voice)

Cree Summer

Phaedra (Elephant) (voice)

Tim Curry

Nigel Thornberry / Col. Radcliff Thornberry (voice)

Lynn Redgrave

Cordelia Thornberry (voice)

Jodi Carlisle

Marianne Thornberry (voice)

Danielle Harris

Debbie Thornberry (voice)

Flea

Donnie Thornberry (voice)

Crystal Scales

Cheetah Cubs (voice)