Flatts the Flounder is a character in Spongebob Squarepants. Flatts first appeared in Sandy's Rocket, where he is captured by Spongebob and Patrick in a brief role. Flatts would reappear in Texas, holding a square to indicate Texas square dancing and appeared in the background scene at the Krusty Krab. Despite the cameos, Flatts would be given a major role in the episode: The Bully. Flatts attended Mrs. Puff's Boating School as a classmate to Spongebob. Flatts soon threatened to kick Spongebob's butt, which severely frightened Spongebob. Spongebob would seek help from Mrs. Puff, who would only make the problem worse; Patrick, who knew Flatts from college; and even Flatt's father, who admitted that he was afraid of his own son. After running through Bikini Bottom, Flatts crashed a truck, causing him various injuries. Spongebob visited him, but Flatts still said he was going to kick Spongebob's butt. Eventually, Flatts punched Spongebob countless times to no effect and would pass out in exhaustion, causing Mrs. Puff to believe Spongebob had punched him. He has not appeared since. He is voiced by Thomas F. Wilson.