Dokumezu is a member of Ouma. He first appeared in Namco x Capcom. His name is Japanese for "poison horse head" and he is based off of Horse-Face, one of the two guardians of Diyu (hell) in Chinese mythology. Dokumezu is Dokugozu's upper classman/mentor and is generally the calmer of the two when it comes to dealing with various situations. He addresses Saya with the utmost respect when speaking to her.