Marshmallow Devil

The Marshmallow Devil (マシュマロの) is a devil who embodies the fear of marshmallows.

Appearance
The Marshmallow Devil has the appearance of a harmless looking blob of flesh with at least four eyes.

Personality
Nothing is currently known about the Marshmallow Devil's personality except it presumably possesses hatred for humans like all non-humanoid devils.

Introduction arc
The Marshmallow Devil is the first known devil to be killed by Denji.

Abilities
As a Devil, the Marshmallow Devil possesses all of the standard devil abilities. However, since marshmallows are not very frightening to humans, it must be quite incredibly weak.

Trivia

 * Although its name wasn't revealed in the manga, the official Animation Guide Book refers to it as the "Marshmallow Devil".