(New) Agent 3. Age: 15. Gender: Female. Main Weapon: Shooter-type. Personality: Easygoing but energetic and active, so she surprisingly gets along well with Agent 4 (Hinata), though they occasionally bicker over trivial things. Likes: Turf War, collecting gear. Dislikes: Extremely spicy food. Combat Style: Good at situational judgment, she's the type to switch flexibly between the front line and backline. She strongly admires and respects the Captain. She often challenges the Captain to matches and either gets turned down or gets completely crushed. Seeing the many scars on the Captain's tentacles, she thinks things like, "What kind of battles did they have to go through to get this many scars?" Little Buddy is her partner, and they are often together.

Agent 4. Age: 14. Gender: Female. Main Weapon: Dualie-type. *Speech style is masculine. Personality: Energetic and active, she often takes the lead in inviting everyone to play, but she's surprisingly airheaded and often takes the wrong path. She's a pushover and will do things if asked, but she refuses things she truly dislikes. Likes: Ranked Battle. Dislikes: Nothing in particular. Combat Style: Almost always on the front line, racking up splats. However, she does look at the battle situation and makes tactical decisions when necessary. She doesn't know much about the Captain, but seeing the reactions and hearing stories from those around her, she thinks, "This person is amazing!" and respects them. She often goes with New Agent 3 to challenge the Captain to matches, only to be turned down or crushed. Looking at the many scars on the Captain's tentacles, she wonders, "What kind of fight leaves scars like that?" She's a huge fan of Off the Hook.

Agent 8. Age: 16. Gender: Female. Main Weapon: Charger-type. Personality: Quiet and calm, she's a bit poor at expressing her emotions. However, as she spends more time with her friends, she has begun to show smiles little by little. She has a kind personality, often considering other people's feelings, and cannot leave someone in trouble alone. Likes: Spending time in quiet places, listening to music, gazing at the starry sky. Dislikes: Loud noises, etc. Combat Style: The type to calmly analyze the situation and support her allies while fighting. She rarely charges in alone and chooses the best action by watching the movement of the entire team. Her accurate aiming is her greatest weapon. She respects the Captain the most and has a strong admiration for them. Unlike New Agent 3 and Agent 4, she rarely challenges them to matches and seems to prefer watching (spectating). However, when she occasionally feels like it, she'll challenge them, only to be turned down or crushed. Looking at the many scars on the Captain's tentacles, she thinks, "I wonder what kind of battles resulted in so many scars..."

Agent 1. Age: 26. Gender: Female. Main Weapon: Roller-type. Personality: Bright, innocent, and friendly. She can get along with anyone immediately and is good at livening up the atmosphere. On the other hand, she has an airheaded and easygoing side, often acting on impulse. Even so, her feelings for her friends and the people of the city are stronger than anyone else's, and she possesses a kindness that won't let her ignore someone in need. Likes: Singing, dancing, Splatfests, spending time with friends, trying new things. Dislikes: Thinking about difficult things for too long, being alone, seeing her friends get hurt, extremely spicy food. Combat Style: Utilizing her natural athleticism and mobility, she supports her allies with quick decisions. Contrary to her bright and energetic aura, she is a reliable presence who stands up bravely when it counts. A popular idol who livens up Inkopolis as a member of the Squid Sisters. She is close to the Captain and trusts them.

Agent 2. Age: 26. Gender: Female. Main Weapon: Charger-type. Personality: Calm and composed. She can look at things objectively and is a reliable presence who can make judgments without panicking in any situation. She usually has a cool aura, but she also has a playful side, making jokes or giving slightly mean-spirited retorts to those she's close to. She is caring and has a kindness that leads her to subtly support her friends when they are in trouble. Likes: Music, live performances, relaxing, looking at the scenery while drinking tea, watching over her friends. Dislikes: Irresponsible behavior, her friends being in danger, overly noisy places (for long periods). Combat Style: A presence that supports the team with a calm atmosphere and high judgment. She quickly assesses the situation and supports her allies accurately. She is usually reserved, but when the time comes, she acts more bravely than anyone. A popular idol who livens up Inkopolis as a member of the Squid Sisters. She is close to the Captain and trusts them.

Age: Over 100. Grandfather of Marie and Callie. Gender: Male. Personality: A highly experienced and reliable commander. He usually speaks with jokes mixed in and has a somewhat aloof, hard-to-pin-down nature. However, when it comes to battle, he uses his years of experience to give calm and accurate instructions to lead his allies. He rejoices in the growth of the younger generation more than anything, and even when he acts strictly, there is deep kindness and compassion at the root of it. He often talks nostalgically about past events, but his drive is still healthy enough that he tries to stand on the front lines even now. *Though everyone stops him with all their might.* Likes: Seeing the growth of young Inklings, relaxing while drinking tea, telling old stories, protecting the peace of Inkopolis and Splatsville. Dislikes: Threats to peace, being treated too much like an old man. His back often hurts. Speaks with an old man's dialect. He is close to the Captain and trusts them.