From the Super Mario Wiki
Chomp Country (a.k.a. the Red Ore Fear Orbs) is a fighting group found in Glitzville during the events of Paper Mario: The Thousand-Year Door. It is composed of two Red Chomps. They are notable for being the highest ranked fighters who fight as a team. Like most chomps, they can only speak in a barking noise. Chomp Country is ranked in second place in the Glitz Pit, behind The Koopinator and above Hamma, Bamma, and Flare. Once Mario defeats them, they drop down into third place. After Mario leaves, Chomp Country reclaims second place. These are the only Red Chomps found during the main quest, only appearing elsewhere in the Pit of 100 Trials.
Before Mario faces them, a Cake will be given to him by Jolene by a "fan". If Mario allows his partner to eat the cake, it will cause them to become sick, and subsequently make Mario fight alone. Once the battle is over, his partner will be up and moving again, apologizing for missing the battle. If they avoid eating the cake, as soon as the battle is over, Shellshock will have eaten the cake, causing him to be on the ground ill.
Names in other languages
Red Ore Fear Orbs