The Blanket Dragon was a one-shot villain of the Adventure Time episode, "Puhoy". It attacked the pillow town until it was slayed by Finn.
The blanket dragon is a large dragon made almost entirely out of pillows. The dragon's body is made out of a very large single red pillow, with two small red pillows for feet. The dragon has a segmented tail made up of many small red pillows, a segmented neck made of six small red pillows, a head made out of an open red pillow with parts of the pillow pointed into teeth, and two small pink decorative pillows for eyes.
The dragon has an extremely large purple blanket draped over its body which the dragon uses as wings for flying.