Madame Christmas

マダムクリスマス

Madame Christmas is a rather gruff woman who owns a hostess bar in Central City, a place frequently visited by Colonel Roy Mustang. Initially, the bar might just seem like further evidence of Mustang's unapologetic debauchery, but it becomes clear that the women under Madame Christmas' care serve as secret informants for Mustang and his squad. Moreover, Madame Christmas herself is a skilled intelligence agent and acts as a contact between Roy and Lt. General Grumman in East City.
[spoiler]It has been recently revealed, by a secret investigation into Roy's past carried out by Central Command's agents, that Madame Christmas' real name is Chris Mustang and that she is Roy's foster mother.

Spoiler