Glut is a great white sharkand a main antagonist of The Little Mermaid. He is a shark who is only seen in a graveyard of ships at the introduction of Ariel seen. She and Flounder are exploring a sunken ship collecting human stuff in it. However, it is not very long before Glut discovers them. Flounder is left to watch for sharks. Flounder is afraid of sharks, so he swims to Ariel. Ariel tells him not to be a guppy. Founders says he is not a guppy. Flounder is still reluctant to watch out for sharks while Ariel searches for human stuff. Little do they suspect or know that they are to discover a REAL shark.
Soon, Flounder discovers Glut but Ariel does not at first. Ariel, not believing Flounder, tells him to relax. Ariel then discovers Flounder was right after all. He pursues Flounder, and a chase follows. Just as he attacks Flounder again, Flounder calls him a big bully. Glut tries to eat Flounder again, but Flounder flees just in time. Glut gets caught in an anchor, and he is never seen after that. He presumably drowned, because sharks need to swim in order to live. However, sharks are pretty strong, so he could have easily gotten out of the anchor, and survived. Glut is not seen for the rest of the movie.
Glut is not a true villain since he only wants to eat, but because he is trying to eat a protagonist, he is a villain.