Propellion

Propellions are snake-shaped Dream World enemies with pink bodies and yellow propellers that appear in Mario & Luigi: Dream Team. A Propellion can attack by floating to either the north, east, south or west of Mario, and propelling itself towards him at a steady pace. Mario must prevent this by turning to where the Propellion is propelling towards him from, and hammer it before it hits him.

Propellions may also float high into the air and point its bottom where it plans to propel itself. If the Propellion points its bottom at Mario after floating up, it will propel itself into him, Mario having to jump over and on to the Propellion to avoid taking damage. If the Propellion points its bottom at a spot behind Mario, it will propel itself over Mario, who would have to not jump and instead idle to avoid taking damage.