Last of the Lily Creatures

From Muppet Wiki

The Last of the Lily Creatures is a sea monster who shows himself to Red in the Fraggle Rock episode "Red's Sea Monster." He is purple and dragon-like in appearance, and speaks in a deep, gravelly voice. As the last of his species, the Lily Creature requires peace and quiet to survive, and asks Red to keep him a secret so he will not be disturbed by the other Fraggles. However, he tells her that she may come back and visit, as she is his friend. He also admires her pigtails.