Kuki (Numbah 3) is the member of sector 'V', she is shown to be a pretty happy-go-lucky, 10-year-old 4th-grader Japanese girl who is also in charge of Diversionary Tactics and is the Medical Specialist. She is one of two female members of the group and the youngest female character. Kuki is a huge fan of Rainbow Monkey, as she collects, fantasizes about, and has extensive knowledge about.
In "No P in the Ool" Kuki is first seen barefoot while in a green swimsuit.
In "Operation: F.U.G.I.T.I.V.E." Kuki is barefooted while at the beach. (This time in a purple siwmsuit and not green)
Operation: C.O.L.L.E.G.E once again has Kuki barefoot while in her purple swimsuit when she and the others are about to enjoy their day off
In "Operation: B.E.A.C.H." Kuki is barefooted while at the beach. Including a scene where a giant rock smashed her castle
In "Operation: S.L.U.M.B.E.R" Kuki is barefooted while in her pjs and eating a snack. (Normally is she seen wearing slippers with her pjs)
In "Operation: S.P.I.N.A.C.H." a quick shot of Kuki's green sock feet are shown when she and the other members of Sector 'V' put on their battle uniforms when the spinach armada came to the school to force everyone to each spinach.