Fraggle Rock (1983)

Season 3: Episode 22

When the Architect Doozer is teaching some younger Doozers about the great Doozer king (who looks a LOT like Gunge) Gunge wanders in the middle of the teaching session while looking for the M'Geecky vines for Marjorie. The Doozers think he's their long lost king, which makes Philo jealous, and he convinces the Doozers that the king isn't Gunge, it's Philo. Their friendship is divided, but the Trash Heap later reminds Philo that friendships last much longer than all the riches in the world.