Kufufu Kekerakera is a member of Amarariruku, the antagonistic group that opposes the heroes of the world. She appears as a petite girl with fair skin, large round golden eyes, and long green hair worn in pigtails. A dark mark resembling a smiling face is visible on her right cheek. Her overall presentation is clown-like, and she insists on referring to herself in the third person as Kfufu while also demanding that others do the same.

Her personality is built around a love of comedy and confusion. She delights in making others laugh, behaves in a mischievous and tricky manner, and often treats confrontations as a game. This has earned her the nickname human toy box, a label she embraces. She frequently uses deception, such as pretending to be an injured child in order to catch opponents off guard. Despite her playful exterior, she is a cunning and formidable antagonist who enjoys sowing chaos and challenging heroes with her unpredictable antics.

Within Amarariruku, she is most often seen alongside Tzveta Kooriskaya. In the story, Kufufu Kekerakera serves as an active threat, directly engaging heroes and supporting the group’s goals through ambushes and tricky attacks. Her role is that of an agent of disorder, and she participates in operations that aim to trap or overpower the protagonists.

Her primary ability allows her to attract all things, pulling objects to herself and then drawing them out from within her clothes as if she were a living container. She can also alter the size of objects, whether inanimate or living, growing or shrinking them at will. Additionally, she can store items beyond the limits of their physical volume, making her capacity unpredictable. She wields these powers with a focus on underhanded and surprising tactics rather than straightforward combat.