The Vile Bunch refers to the group of Muppets who appear with Alice Cooper during his stay on The Muppet Show in episode 307. Possibly working on his staff under an unseen employer set on gathering souls, Alice has brought his own monsters consisting of a band, a snake, Beakie and Purple Heap.
The band -- including Chopped Liver, the Flower-Eating Monster, Silver Beak, the Shark Drummer, and an unidentified guitarist -- performed with Alice on his hit songs, "Welcome to My Nightmare" and "School's Out."
Quotes
Scooter: "Sir... I think there's something you should know."
Alice: "Yes?"
Scooter: "These monsters aren't ours."
Alice: "I know. They're mine."