Mumei

Mumei (無名, Mumei), a mysterious girl who boards the Kōtetsujō and appears at Aragane Station. It seems she gets special treatment from warriors, but this is because she lets them use her body for anything those warriors want, like sex or pleasure or even orgy. Ikoma invented a special device (a huge, slimy vibrator) to satisfy her lust. It was revealed that the juice from her vagina turns people into Kabanes.

Personality
She has a very child-like personality, Usually seen skipping, or running around naked or playing with sex toys.

Powers and Abilities
She is a very skilled fighter, as seen when she beheaded a Kabane with a single kick; as well as sex partner, shown when she and Ikoma having sex for 24 hours straight without rest, while a drill is inserted into her anus.