Octarians are a fictional species from the video game series Splatoon, developed by Nintendo. They are characterized by their octopus-like appearance, featuring tentacles and a variety of colorful designs. Octarians are known for their role as antagonists in the game, often battling against the player, who typically controls Inklings. In the Splatoon universe, Octarians inhabit the underground world of Octo Valley. They are part of a larger conflict between the Inklings and the Octarians, with each side vying for control over territory and resources. The Octarians have their own unique weapons and abilities, making them formidable opponents in the game.