Chomp Chomp

Chomp Chomps are golden Chain Chomps found in Super Mario RPG: Legend of the Seven Stars. They can be found in the secret underground region of Bean Valley; this area is accessible via Warp Pipes on the surface. Fighting the one Chomp Chomp known to exist also plays a part in unlocking Grate Guy's Casino.

Trivia

Interestingly, a Chain Chomp in Super Mario Sunshine became golden when getting into the Pianta Sauna of Pianta Village.
In Paper Mario: The Thousand-Year Door, the second-to-last sentence in Goombella's Tattle for Chain-Chomps erroneously mentions the Chain-Chomp as "Chomp-Chomp", a name eerily similar to that of the obscure Chomp Chomp sub-species. However, this is thought to be a simple mistake.
One of the three Chomps of The Underchomp is yellow, making it appear similar to a Chomp Chomp.
A Stone Chomp looks similar to a Chomp Chomp, including the box.

[Edit] Chain Chomps
Characters	Broode's Chain Chomp • Chomp Country • Kyankyan • Paper Macho Chain Chomp • Princess (Paper Mario: Color Splash) • Princess (Paper Mario: The Origami King) • The Big Chomp and the Little Chomp • Underchomp
Species	Big Chain Chomp • C. Chain Chomp • Chain Chawful • Chain Chomp • Chain Chomplet • Chaindelier • Chomp (stomping) • Chomp Chomp • Chomp-Muncher • Dark Chomp • Fire Wanwan Dosun • Frame Chomp • Gold Chomp • Homing Chomp • Incoming Chomp • Mecha-Chomp • Paper Chain Chomp • Red Chomp • Small Chomp • Spiked Chomp • Stone Chomp
Other	Chomp Rock • Fake Chomp