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 four eyes, two in the back and two at the bottom. It has many small tentacles at the base of its body, most probably used for movement.

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".