Cuttlefish

Cap'n Cuttlefish (Japanese: アタリメ司令 Commander Atarime) is a main character in Splatoon. He is an elderly Inkling. He acts as a guide for the protagonist in the Hero Suit in Hero Mode.

Personality and traits
Cap'n Cuttlefish is a decorated hero who fought in the Great Turf Wars of legend between the Inklings and Octarians. He now keeps solemn vigil over Octo Valley, watching for any fishy behavior. Though his clothes may be tattered, his heart is pure and nothing escapes his razor-sharp gaze.

Trivia

 * In the main hub of Octo Valley, the player can ink Cap'n Cuttlefish; he will eventually shake off the ink, however.