Mensab is an artificial intelligence that defends Toha Heavy Industries' Cave 8. She is usually accompanied by her loyal companion, Seu. She has a rather close relationship to Seu and hates her superior, the Central AI, for forbidding her to regenerate his personality.
Mensab is capable of Forwarding, a form of teleportation which she often uses to save Seu when he takes to much damage. In one occasion Killy gets caught up in the forwarding and is sent to another world line where he meets another version of Cibo.
Mensab and Seu showing their close relationship
Mensab's face sometimes has a weary and old look, indicating tiredness.