The Muppet Show (1976)

S1E19 Juliet Prowse

Muppy, the beloved pet of J. P. Grosse, the owner of The Muppet Theatre, starts to act like a diva after Kermit caves in and lets him perform a musical act with Scooter. Muppy enjoys the perks of a dressing room and even a starring role, but Kermit puts his foot down when Muppy demands the show be renamed The Muppy Show. When Muppy barricades himself in his dressing room and declines to take the stage, Scooter steps in and performs the number alongside Fozzie instead.