Barribad

The Barribad is in enemy in Super Paper Mario. It is encountered in the Whoa Zone. Its name is derived from "barrier", referring to its method of protection, and "bad". It appears similar to a circular Yux. The Barribad projects an impenetrable barrier around itself when Mario, Princess Peach, Bowser, or Luigi approaches, and shoots rings of energy at them. However, by flipping to 3D, the player can go around the barrier, switch to 2D, and defeat it.

Tattle
That's a Barribad. It can shield itself with a strong barrier...Max HP is 4 and Attack is 2. It also shoots rings of energy from its mouth...You can't break its barrier, but you can flip to get places it might not want you to...