An Octarian is a fictional character from the popular video game series Splatoon, developed by Nintendo. They are known for their octopus-like appearance, featuring tentacles instead of hair. Octarians are often portrayed as the antagonists in the game, opposing the player-controlled characters known as Inklings. In the game's storyline, Octarians inhabit the underground world of Octo Valley and are led by the villainous DJ Octavio. Players encounter Octarians in various missions and battles, where they use unique weapons and tactics to challenge the Inklings. The Octarians add depth to the game's narrative and gameplay experience.