From the Super Mario Wiki
Air Cheeps are a sub-species of Cheep-Cheeps that have been influenced by the Dark Star and can only be found inside Bowser's body in Mario & Luigi: Bowser's Inside Story. These enemies are found only in the Airway. They are round, purple Cheep-Cheeps with a black star marking on their face and a cork on the top of their head to keep the air inside. They have two methods of attacking. First, they will attack like a Nooz by floating to the top of the bro, attempting to crush them. However, they may release air from their mouths, making them fly up and delaying the attack by a few seconds. This attack is countered with the hammer. In their second attack, the Air Cheep puffs up to a tremendous size. It will then attempt to run over one of the bros. This attack can be countered with the hammer. If one manages to hit the cork on the Air Cheep's head, the cork will fall off and the Air Cheep will fly around like a balloon and deflate. In this state, it can't attack, and its defense is lowered. It is also possible to attack deflated Air Cheeps with a hammer. After a few turns, the Air Cheep will get another cork and re-inflate itself. This attack can notably allow Mario or Luigi (at common levels) to defeat the Air Cheep without attacking it, on the first turn of battle. This is done by not hitting the cork and repeatedly counterattacking.
Names in other languages
|Air Puku, "Puku" being derived from "Pukupuku", Cheep-Cheep's Japanese name
||Identical to the English Name