Rupert
Season 1, Episode 4: Rupert and the Purple Cakes
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When Rupert and Podgy find what appear to be purple cakes in the forest, Podgy ignores Rupert's warnings and eats them. Too late, he discovers that they are the Professor's creations, devised to make things lighter than air.
All Episodes - Season 1
Episode 1
Rupert and Pong Ping
Episode 2
Rupert and the Sage of Um
Episode 3
Rupert and Algy's Misadventure
Episode 4
Rupert and the Purple Cakes
Episode 5
Rupert and Bill in Gameland
Episode 6
Rupert and Little Yum
Episode 7
Rupert and the Knight
Episode 8
Rupert and the Crocodiles
Episode 9
Rupert and Raggety
Episode 10
Rupert's Undersea Adventure
Episode 11
Rupert and the Twilight Fan
Episode 12
Rupert and Billy Blizzard
Episode 13
Rupert and the Pirates