Second Lieutenant Rebecca Catalina is a soldier under the command of Lieutenant General Grumman at the East City Headquarters and a close friend of Riza Hawkeye. Though an exceptionally skilled soldier with combat abilities on par with Hawkeye and Havoc, Rebecca's true ambitions appear to lie with in the marital realm, as she spends much of her time complaining about her single life and trying to get Riza to help her find a man. She declares, after Hawkeye mocks her, that she hopes to "land a real hunk and retire early" from the military. -Wikia
The husband of Izumi Curtis, an enormous muscular man who works as a butcher in the town of Dublith. He is a man of few words and does not question the judgment of his beloved wife, even after she tried to resurrect their infant son when the child died. Like Izumi, he cares deeply for the Elric brothers and also dislikes the military. In the manga, when greeted by Fuhrer King Bradley, he ignores the Fuhrer's inquiries and offer for Izumi to become a State Alchemist, but ends up befriending Major Alex Louis Armstrong in a muscle flexing contest. Strangely, in one episode of the anime, he is seen sleeping with both eyes open. He also becomes friends with Winry Rockbell.
The man who introduces himself as Charlie was an enlisted soldier under the command of the Flame Alchemist, Roy Mustang during the Ishval Civil War. When the long fighting finally ceased, Charlie brought it upon himself to speak to his distant commander and thank him for all the work he had done to keep all the men beneath him out of harm's way. Source: http://fma.wikia.com/wiki/Charlie
Maes Hughes's wife, and Elicia Hughes's mother, she is a kind and caring person. Gracia appears peripherally throughout the series and allows Winry to stay at her house when she is in Central and Sheska to frequently visit. In the manga, it is revealed that she and Hughes met before he was sent out to the battlefield during the Ishval War.
Izumi Curtis, born Izumi Harnet, the teacher of Ed and Alphonse Elric, agreed to train the brothers to hone their alchemical abilities after their mother died. She expands their training with a regimen of philosophy, martial arts, and living off the land. Her methods are derived from her own alchemy training: in the manga and second anime, she was forced to survive in the northern region surrounding Briggs Fortress for a month (although it turns out she succeeded by stealing supplies from the northern fortress), whereas in the first anime she was taught by Dante. She thinks of the Elrics as her own sons, and although she severs her student-teacher ties with them after learning of their attempts with human transmutation (and similarly Ed's joining the State Military), she continues to do all she can to help them. She can be quite violent when punishing or sparring with the Elric brothers, so they tend to be deathly afraid of her. Her claim of "I'm a housewife!" while confronting Greed was a favorite scene of Arakawa's to draw. Izumi and her husband Sig Curtis (シグ・カーティス, Shigu K�tisu) were expecting a child years before the start of the series; however, their son was stillborn. Izumi tried and failed to revive the child through human transmutation (an act that created Wrath in the first anime). The failed attempt took some of her internal organs, resulting in infertility, and causing her to periodically cough up blood. Izumi gained the ability to use alchemy without a transmutation circle after seeing the "truth." In the manga, Izumi attracts the attention of the State Military for surviving the failed human transmutation. As she and her husband travel around Amestris in order to avoid the military, they eventually meet Ed and Al's father Hohenheim. He rearranges her insides to ease the blood flow, and persuades her to help collaborate in bringing down the State Military.
Grandmother of Winry, and old resident of Risembool. Also, a parent like figure to both Edward and Alphonse, after they lost their mother. It is shown that Pinako was Hohenheim's drinking buddy, and that she was the one to introduce Hohenheim with his future wife, Trisha.
Riza Hawkeye is Roy Mustang's most trusted subordinate. She carries out many of the tasks he is too lazy to do, acts as his personal assistant, and protects him from danger. She also doubles as his voice of reason, keeping cool in heated situations and scolding him when he allows his emotions to get in the way. Riza and Roy seem to share a close relationship in both adaptations of Fullmetal Alchemist; in the anime she identifies him as her most precious person, whereas in the manga she loses her resolve to live when believing he has been killed. Riza specializes in firearms, particularly sniper rifles, and can hit nearly any target with lethal accuracy. She adopts a dog, called Black Hayate in both the anime and the manga, which she raises with stern discipline; when Hayate goes to the bathroom inside, she shoots at the wall behind him to reinforce that doing so is bad.