The strongest. Powerful. A half-inkling, half-vampire. Though he is a vampire, he feeds on specific emotions as energy rather than blood or ink. However, because his abilities differ slightly from the inklings around him, he usually pretends to be a normal inkling. He is Blow's older brother. His parents run a bakery.

The strongest. Powerful. A troublemaker who likes Suu (note: not in a romantic way). He has no parents and lives alone, claiming Walleye Warehouse's second storage as his territory; naturally, he lacks much formal knowledge. He doesn't struggle for food because Suu gives him bread from the bakery. He wears bandages on his neck to hide a scar he's had since he was small. He doesn't trust many inklings.

The strongest. A total powerhouse. A half-human, half-demon. Suu's younger sister. Apparently, she can't get into the groove unless she's using a Hero Charger. Her signature weapon is the Inkbrush, but she got bored of inking and switched to long-range weapons. She hates boys, except for Suu and a select few others. She likes girls, but she won't forgive anyone who gets in Suu's way. Her parents run a bakery. She calls Suu "Big Bro Suu." She used to be a researcher in secret. *She has quit being a researcher, but she created Eat, who resembles Suu, in order to protect him.

Weak. The younger brother of Garone from the food bar. Because he is often bullied by other inklings, he prioritizes protecting himself over fighting. However, he admires Suu and the other heroes.

Fairly strong. Has a younger brother named Ross. She was previously killed by Blow and became a ghost. She absolutely hates her father. She haunts Suu and Rion at the Walleye Warehouse second storage just to startle them. She cherishes Ross deeply. As a ghost, she floats slightly. Some inklings can see her, including Rion, Suu, Blow, Huro, Eat, Ross, and Garone.

Fairly strong. Has an older sister named Kill. Like Kill, he absolutely hates his father. He thought about seeking revenge, but he and Kill stopped because they didn't want to lose anything else. He cherishes Kill deeply. He lost his voice due to the shock of seeing his sister's body when she was killed by Blow in the past. Since he cannot speak, he communicates by nodding. Kill understands what Ross is thinking, so she always tells everyone what's on his mind.

The strongest. Powerful. Created by Blow to protect Suu, but after being told that "monsters (powerhouses) protect the weak," he now protects Huro instead of Suu. He defends Huro with his life. Generally silent. Speaks in fragments. *Example: Don't know. Wrong. Huro, not bad. Protect. etc.