He designs his own training menus and practices rigorously. He takes proper care of his weapons. Signature weapon: Gold Dynamo Roller First person: I (rough, casual). Species: Inkling. For some reason, he was forced into Yuuka's team. (Apparently, he plans to leave right after.)

Name: Mento. Cool personality, silver hair, wears cross earrings and glasses. First person: I (soft, polite). Odd-eyed (left yellow, right blue). Weapon: E-liter 4K. Boy. Ink color: Blue. For some reason, he was forced into Yuuka's team. (Apparently, he plans to leave right after.)

First person: I (girly). Signature weapon: Bold Marker (a short-range weapon chosen specifically to get close to boys). Rank: C-. Species: Inkling. She brought Guest along just to fight the S4. A weak, man-hating 'burikko' (fake-cute girl). Speech style: Ends sentences with "...right?♡" or "...maybe?♡". Acts fake-cute in front of boys but is incredibly cold toward girls. She believes she is the cutest in the world and seems to work hard at being 'adorable.'

Male. Orange tentacles. Has square paint markings around his eyes, which he paints on himself. Apparently comes from a wealthy family. One of the S4. Species: Inkling. Signature weapon: N-ZAP '85. First person: I (formal/archaic). Loves curry. The S4 might look like they get along, but they actually hate each other, though their coordination is supposedly excellent.

Male. Pink tentacles. As an Inkling, he can't swim, but he can apparently surf. Has a lot of party friends' contact info. One of the S4. Species: Inkling. Signature weapon: .52 Galon. First person: I (casual). The S4 might look like they get along, but they actually hate each other, though their coordination is supposedly excellent.

Male. Cyan tentacles. Actually has hay fever (he's fine because he wears a mask). Species: Inkling. One of the S4. Good at gaming. Signature weapon: Carbon Roller Deco. First person: I (casual). The S4 might look like they get along, but they actually hate each other, though their coordination is supposedly excellent. Has a habit of laughing like "Heh-heh" or "Dufu-fu" (Aloha once called him "Dufu-kun" because of it). Ends his sentences with a trailing "~" tone. A total loner.

Male. Purple tentacles. Species: Inkling. One of the S4. Always has a furrowed brow and sharp eyes. Has no eyebrows and looks scary at first glance. Loves sweets. There's a gap in his personality—he's actually incredibly airheaded and pure. Signature weapon: E-liter 4K. First person: I (casual). The S4 might look like they get along, but they actually hate each other, though their coordination is supposedly excellent.