The Caterpillar Oni is a unique type of Oni that is exclusively seen in Version 6 in the Oni Room.
The Caterpillar Oni appears to be a sluggish oni with six eyes visible and many tiny legs.
It is only seen pacing left to right, and runs off with the other Oni's when the Oni Room jail cell is opened up after Hiroshi is chased out. Little to no information can be said about Caterpillar Oni, due to its near uselessness in the game. Caterpillar Oni is slower then any other oni, except for Blob Oni, which makes it easier to escape.