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The teppums were basically the Muppets with their names backwards. They had a show that was broadcast on a different planet than earth, which Digit was able to get acess to in Episode 101: Science Fiction. They appeared on a monitor, which was purple. They sang Chagganooga Choo-Choo with the Muppets.
Named Teppums include Timrek the Gorf and Oznog.