Akemi Suedou

Akemi Suedou (末堂 アケミ) is a researcher who works for Kamishiro Enterprise.

Fiction
Suedou first appears to Aiba and Arata Sanada in a digitalized Shinjuku subway, after the latter notices he is following them. Suedou tells them about his true identity, and his research on Eaters. He also tells them the Kamishiro Enterprise was aware of Eater's existence, and that the "ghost of the white boy" is an omen that indicates the monster's presence.

Mother Eater
Suedou merges with King Drasil and mutliple Eater (Purebreed Mode) to become the Mother Eater.