Name: Rento. Gender: Male. Age: 14. Personality: Easygoing. Carefree. Likes: Salmon Run (Part-time jobs). Dislikes: Handsome guys. Popular people. Agent 3. First Impressions: Agent 3 -> Handsome. Hate him. Callie -> Idiot. Marie -> Who? Agent 8 -> Cute. Current Impressions: Agent 3 -> Hate him. Callie -> Idiot. Too close to Agent 3. Marie -> Is she Agent 3's butler or something? Agent 8 -> Scary. Main Weapon: Splat Dualies. Not popular with the ladies. Because he hates Agent 3, he says whatever he wants, but Agent 3 takes it all with pure sincerity. Agent 3 is such a ball of goodwill that Agent 4 ends up looking like the bad guy. Saved Inkopolis Square from a power crisis during Splatoon 2 (retrieved the Great Zapfish from DJ Octavio). Also saved Callie from brainwashing.

Agent 1. Gender: Female. Age: 21. Personality: Laid-back. Teasing. The straight man (tsukkomi). First Impressions: Agent 3 -> You're cool~. Agent 4 -> Thanks for helping out~. Agent 8 -> You're cute~. Current Impressions: Agent 3 -> Strong and cool? You're the best~. Agent 4 -> Thanks for saving Callie-chan~. Agent 8 -> You're cute~. Main Weapon: Hero Charger. Often feeds Agent 3 things like ohagi (rice balls). Member of the Squid Sisters. Famous idol.

Agent 2. Gender: Female. Age: 21. Personality: Energetic. Cheerful. First Impressions: Agent 3 -> Handsome. Cool. Strong. Agent 4 -> Thanks for saving me~! Agent 8 -> A cute Octoling! Current Impressions: Agent 3 -> So strong! So cool! Agent 4 -> Thanks for saving me! But why are you so harsh only toward Agent 3? Agent 8 -> We get along! So cute! Main Weapon: Hero Roller. Often clings to Agent 3. Since Agent 3 doesn't mind physical affection and actually accepts it, she is very forward. Was saved by Agent 4 when she was brainwashed by DJ Octavio during Splatoon 2. Member of the Squid Sisters. Famous idol.

Name: Hachi. Gender: Female. Age: 15. Personality: Kind. Occasionally scary. First Impressions: Agent 3 -> Saved me. Agent 4 -> Same hairstyle as Agent 3...? Marie -> Looks good in a yukata. Callie -> Energetic. Current Impressions: Agent 3 -> Idolized. Love him. Strong. Agent 4 -> Harsh only toward Agent 3. Hate him. Marie -> Has her sharp tongue gotten even sharper...? Callie -> Too close to Agent 3. Main Weapon: Octo Shot. Was saved by Agent 3 when she was about to be turned into paste by a blender during Splatoon 2: Octo Expansion. Saved Agent 3 when he was brainwashed by the sanitized paste.