Sekibanki (赤蛮奇) is a rokurokubi living undercover as a human in the Human Village.

Sekibanki has red hair and eyes. She wears a blue bow with red trimmings and a red and blue capelet that covers part of her face. She also wears a black and red long sleeved shirt, as well as a dark red skirt and red and black boots. When she's defeated, her portrait with a slash in her shirt show that she wears a white undershirt.

Abilities: Making her head fly. As literally stated, Sekibanki can detach her head from her body and move it at will.

Multiplying heads. Many of her spell cards involve creating clones of her head, to attack from different places at once. It's unknown if they are actual heads that can think on their own to some extent (Like Flandre's Taboo "Four of a Kind"), or just replicas resembling the original.

Long neck. She has shown to be able to elongate her neck to a great extent.