Heidi the Hippo

Samantha the Cat / The Sheep

Sebastian / Dr. Quack / Daisy the Cow / Sandy the Chicken

Heidi the Hippo / Barry the Bulldog / Robert the hedgehog

Harry the Hare / Dennis the aadvark / Abi the Contortionist / mr.big the whale / Pekingese / Vietnamese Gophers

Wynyard the Frog / Trevor the Rat / F. W. Fly / Jim the frog / Chuck the frog / the Spider / vietnamese Gophers

Bletch / Arthur the Worm / Baker / Paperboy / Announcer

Sid the Elephant / The Cockroach / Luie the Dog / Guppy the fish / Poodle / Bartender / Crab

Musician Frog