Chomp Bro

Chomp Bros. are large, muscular sub-species of Hammer Bros. wielding a Chain Chomp as a weapon. They are only found in Bowser's Castle during the events of Mario & Luigi: Superstar Saga. They attack by throwing their Chain Chomps at either Mario or Luigi. The number of times they spin around determines how fast the attack will be. If Mario or Luigi jump on the Chain Chomp when it is thrown, it will fall off the screen, leaving the Chomp Bro. completely defenseless. Sometimes Chomp Bros. will run away from the battle when they are unaccompanied by a Chain Chomp. At other times they might actually get the Chain Chomp back, and the entire process starts over again. Also, they are healed by fire, and are weak to thunder.

Trivia
Chomp Bro. is likely based off of a Hammer throw athlete, due to its appearance and behavior of hurling a ball, which also resembles the ball used in that event.