Demons

Muppets and Creatures

Demons The Muppet Show Episode 509
Demons in Episode 509

Character The Devil
The Devil from The Muppet Show

Devil Agent
Morty from Muppets Tonight

Devil Lawyer
Phil from Muppets Tonight

Characters Devils
The Devils from The StoryTeller episode, "The Soldier and Death." Dinosaurdevil
The Dinosaur Devil

Muppet Animal Psychomachia
Animal The Muppets

Swampmonster
The Predator, referred to as a demon in No Strings Attached

Animated and Illustrated
Gonzoad
"The Great Cookie Robbery"

Psychomachia-MB412
"The Frog Who Knew Too Much"

Others
Maria-Devil Maria "Surprise"

Piggy-Psychomachia
Piggy Puppet "Miss Piggy's Guide to Life"

See also
Theological figures
Hell
Angels
Psychomachia