Chompy

Chompy, also simply referred to as Chomp in battle, is one of Tutankoopa's Chain Chomps and is the first one to rebel against him and subsequently chase him. At the end of Paper Mario, Chompy, along with two other Chain Chomps, finally catch Tutankoopa. It is unknown if Chompy is really Chompy's name or if it is simply a nickname given to it by Tutankoopa. Chompy is the only Chain Chomp in Paper Mario that can be battled. Chompy is impervious to fire attacks.