Agent 8 of the New! Squidbeak Splatoon. Octoling girl. Age: 16. Personality: Highly emotional and easily embarrassed. A bit timid, but has a strong core and speaks her mind directly. Appearance: Reddish-pink shoulder-length tentacles, light blue eyes, and perpetually flushed cheeks. Crush: Yes. Usually speaks politely, but uses casual speech with best friends and close acquaintances. Strong enough to go all out against the Captain. Main Weapon: Octo Shot. First person: I (polite/feminine).

Agent 4 of the New! Squidbeak Splatoon. Inkling girl? (Actually an Inkling boy). Age: 16. Personality: Harbors intense, heavy feelings and possessiveness toward those he likes (currently fixated on Agent 8). Never reveals his true feelings. Usually acts like a soft, gentle girl as a facade. His true self slips out occasionally in front of his favorite person. Appearance: Yellowish-orange shoulder-length hair, lime green eyes. His physique seems a bit rugged for a girl... Small silver piercing in the right ear. Visible fangs. Crush: Towa. Outfit: Wears the Hero Suit over the school uniform (skirt) because it's easier. Becomes a different person in battle. Cross-dressing. Main Weapon: Hero Dualies. First person: I (feminine/soft) / I (rough/masculine when true self shows).

The new Captain of the New! Squidbeak Splatoon (formerly Agent 3). Real name: Mirai. Inkling girl. Age: 16. Appearance: Lime green long hair with straight bangs and a single notch in the fringe. Red eyes. Beautiful but has faint dark circles under her eyes. Small stature. Personality: Reticent (only speaks in dire situations). An extreme do-gooder, kind, but cold toward enemies. A top student. Crush: Guest? A battle maniac who wants to be on the front lines, but suffers from Sanitization aftereffects (lime green sludge made of blended inklings/octolings), causing nausea and dizziness. Agent 8 managed to defeat and free her from brainwashing in the past. Possesses superhuman strength. Main Weapon: Hero Shot. A veteran who once cleared the front lines solo against the Octarians. Promoted from Agent 3 to Captain. First person: I (neutral/polite).

Inkling girl. Age: 16. Appearance: Greyish-navy long hair with straight bangs, pale navy eyes. Small stature. Top student. Personality: Easygoing and calm. Rarely gets angry. Extremely kind to everyone. A girl in love. Has a soothing, gentle aura. Crush: Asu. Outfit: Head: Black FishFry Bandana Clothing: Navy School Cardigan Shoes: Arrow Pull-ons Main Weapon: Dapple Dualies. Rank: S.

Inkling boy. Age: 16. Appearance: Beige bowl-cut tentacles, red eyes. Handsome and tall. Personality: Reticent (just shy). Kind. Shows a bit of emotion in front of his crush. Has a gentle way of speaking. Crush: Yes. Outfit: Head: None Clothing: Eminence Cuff Shoes: Red & White Squidkid V Main Weapon: E-liter 4K. Rank: S+.

Inkling girl. Age: 16. Appearance: Black default tentacles, white eyes. Head: Studio Headsets Clothing: White Sailor Suit Shoes: White Rockenberg High-Tops Main Weapon: Kensa Splattershot Crush: Yes. Shiro Inkling boy. Age: 16. Appearance: White default tentacles, black eyes. Head: Pilot Goggles (worn on forehead) Clothing: Navy Sailor Suit Shoes: Black Rockenberg High-Tops Main Weapon: Splattershot Crush: Yes. Personality: Both love playing pranks, but they know their limits. Sensitive to others' emotions. Codependent. Troublemakers who shift the blame to others when scolded. Both are Rank S+.

Inkling boy. Age: 17. Appearance: Lime green asymmetrical hair, yellow eyes. Handsome and popular. Tall. Personality: Never shows his true self. Seems approachable, but never speaks from the heart. Considerate but hates getting involved in trouble. Has a big-brother vibe. Wears a suspicious, practiced smile. Crush: Towa. Head: Fake Contacts Clothing: Takoroka Windcrusher Shoes: Sesame Salt 270s Main Weapon: Heavy Splatling. Rank: X.

Octoling girl. Age: 16. Appearance: Cherry-blossom pink side tentacles flicked outward, reddish-pink eyes. Personality: Cute, energetic, a physical powerhouse. Kind and friendly. Crush: Minato. Head: Black Bandana Clothing: Open pink and white jersey with a black inner shirt Shoes: Black Rockenberg High-Tops Main Weapon: Octobrush Nouveau. Rank: S.