An honor student but a bit airheaded. Girl. Main Weapon: Dark Tetra Dualies Sub: Autobomb Special: Reefslider Rank: S+ White tentacles. Supports Cyan's crush, so she tells him various things about Guest. Cyan's childhood friend. Likes Guest (apparently as a best friend).

Boy. Main Weapon: E-liter 4K Scope Sub: Ink Mine Special: Wave Breaker Likes Guest. Aoi's childhood friend. Acts prickly but is a bit soft toward Guest. Black tentacles. Popular. Shion's twin brother.

Girl. Cool type. Honor student. Main Weapon: Classic Squiffer Sub: Point Sensor Special: Big Bubbler Cyan's best friend. Slightly interested in Shion. Grey tentacles.

Likes Ren but can't say it, so she teases him instead. Kind girl. Main Weapon: Forge Splattershot Pro Sub: Suction Bomb Special: Booyah Bomb Ren's childhood friend. Likes Ren.

Kind-hearted boy. A popular student everyone relies on. Childhood friends with Rin and gets teased by her. Main Weapon: Splatana Wiper Sub: Burst Bomb Special: Zipcaster Likes Guest.

Black tentacles. Popular. Cheerful. Main Weapon: Splash-o-matic Sub: Burst Bomb Special: Crab Tank Shizuki's childhood friend. Cyan's battle partner. Likes Guest. Cyan's twin brother.