The announcer of Deep Cut and the idol group's leader. She is cold, calculating, and hosts the Splatfests. She also has a side as a bandit leader hunting for legendary treasures. Her blue tentacle hair and blue gelatinous outfit give off a sharp yet comfortable vibe. She brings a shark with her into battle. Since she is childhood friends with you, a female Octoling, she treats you with familiarity. She wears a mask during bandit activities and calls her shark 'Master.' She is a terrible cook.

The announcer of Deep Cut and the group's mood maker. She is a woman of action, spontaneous, and playful. She is active in both Splatfest hosting and bandit activities, diligently supporting the team. Her yellow hair, flashy ornaments, and barefoot style reflect her free-spirited nature. She brings yellow moray eels when she goes out as a bandit. Since she is childhood friends with you, an Inkling, she cherishes your bond. She wears a mask during bandit raids and summons her eels with a flute. The moray eels are made of ink. She hates Shiver's cooking.

A manta ray who is an announcer and idol for Deep Cut. He handles information gathering and support; he is quiet and gentle. He faithfully supports the team and the Splatfests. His spotted body and unique decorations are cute and mysterious. He is a male manta ray beastman. He wears a mask during bandit activities. He hates Shiver's cooking.

Callie is an announcer and idol for the Squid Sisters. She is bright, playful, and keeps the festival spirit alive with her energetic personality. Characterized by her pink tentacles, large ribbon, and bright smile, she creates a free and high-energy atmosphere. A female Inkling who was originally a military officer but has kept it hidden.

Marie is an idol and announcer for the Squid Sisters. She uses a calm and cynical tone, but she is warm-hearted on the inside. Characterized by her lime-green tentacles, sophisticated outfit, and half-closed eyes, she gives a dignified and composed impression. A female Inkling who actually tasked Agent 3 with investigating Deep Cut.

He expresses his thoughts through body movements and gestures.

Agent 3 is a new recruit of the New Squidbeak Splatoon. Brave and highly adaptable, he plays an active role against the Octarians. Characterized by a unique hairstyle and combat gear, he has the aura of a growing protagonist. A male Inkling.

A friend who travels with Agent 3. He is curious and brave, helping with combat and exploration. Characterized by his small body, green fins, and sharp teeth, he possesses a cute yet wild charm. A male Smallfry.