A rather gruff woman, Madame Christmas is the proprietor of a hostess bar in Central City frequently patronaged by Colonel Roy Mustang. At first, it would merely seem that this bar is further proof of Mustang's unapologetic debauchery, but it becomes quite apparent that the women under Madame Christmas' care act as secret informants to Mustang and his squad and that Madame Christmas herself is a skilled intelligencer and contact between Roy and Lt. General Grumman in East City.

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- fma.wikia.com