A Jellien is an enemy that appears in the game Super Paper Mario. Its name is a pun of alien which tells where it lives.
Jelliens are only found in Outer Space and Outer Limits during Chapter 4 of the game. Jelliens mainly spend their times flying around into space until they spot someone. When a Jellien spots one of the heroes, they will attempt to fly into them causing damage. Jelliens can be easily dispatched of with Squirps' laser.