From the Super Mario Wiki, the Mario encyclopedia
Tuff (named Scoria in the PAL version) is a Cragnon who makes an appearance in Super Paper Mario. If the player refuses Marbald's request to help save the Cragnons from the Floro Sapiens, they can find Tuff in front of an outside cragvision set in the Downtown of Crag. If the player talks to him, he tells them to stay away from him as he does not want to catch "chickenitis", and that he should they should be more like Flint Cragley, who, according to Tippi/Tiptron, he is obsessed with. After coming back to the town, he asks if the player knows about Flint Cragley. If the player says no, he mentions two episodes of Flint Cragley, Cragtrotter and he records every time it's on. If the player says yes, he mentions that Flint Cragley is missing and he is losing sleep over it. After defeating King Croacus IV, he is seen near the stage saying that King Croacus was defeated by Flint Cragley and was shocked by the episode was caused by garbage. After beating the game, he starts admiring the song, "Theme of Cragley", and wants to add it to his collection.