Mr. Grizz, originally named Bear #03, is a character introduced in Splatoon 2 that returns in Splatoon 3 as the main antagonist.
Mr. Grizz is the owner of Grizzco. He is responsible for training, coaching, and supervising his employees.
Hey, kid. How'd ya like to shape the future of Inkopolis? The name's Mr. Grizz, CEO of Grizzco Industries. If you have any questions or concerns, let me know.