Dumpuff

The Dumpuff is a species of harmless driftill that can inflate its air sac to fly and make itself appear larger.

=In fanon games=

In Pikmin X: Deep Freeze
The Dumpuff is an enemy appearing in Pikmin X: Deep Freeze. A small, one-eyed creature with four nubby legs, it can inflate the sac on its head to make itself appear larger and more dangerous, although it is completely harmless. This sac also allows it to float in the air. They are so delicate that if a Pikmin is thrown at one, its sac will pop and it will drop to the ground, sometimes dropping nectar or sprays. They do not give many seeds or Pokos when collected, so it is not worth it to carry away the corpse.