Cornello is a low-rate alchemist and a fraud. He uses what he thinks is the Philosopher's Stone to fool the people of Lior into thinking that he is sent by the Sun God Leto with the power to perform miracles, including resurrecting the dead. Although he uses alchemy to bring prosperity to the desert city, his true intention is to convert the citizens into a fanatical army. The Elric brothers expose him for a fraud, and shortly afterward the incomplete Philosopher's Stone becomes unstable and shatters as it tears his arm into a mass of flesh and metal. After the Elrics undermine his plan and Cornello is no longer of any use to the Homunculi, he is consumed by Gluttony. Envy, disguised as Cornello, maintains the deception until Lior is subjugated by the State Military. In the manga, Lust tells Gluttony he'd be better off not eating a fourth-rate fraud like Cornello, and kills him herself. Gluttony eats Cornello's dead body afterwards, Lust replying to Gluttony rather annoyed, "I thought I told you not to eat that."
An assistant at the Curtises' butcher shop who is more outspoken than his employer. He has worked for Sig and Izumi at least since the Elrics initially became Izumi's apprentices. During Izumi's challenge to survive on Yock Island for one month without using alchemy and to discover the meaning behind "All is one, one is all", Mason was the monster who kept attacking the brothers. Izumi had ordered him, in disguise, to make sure nothing happened to the boys during their stay on the island.
The commander of the eastern headquarters and grandfather of Riza Hawkeye. As he is not under the constant surveillance of the Humonculi, he aids Mustang in trying to topple the Humonculi controlled government, but seems to do so strictly out of personal ambition.
Scar's Brother giving up his life and arm to save Scar's after he had been gravely wounded. Just like Scar his real name has never been revealed. In the 2003 anime, he created Lust during a failed human transmutation, while attempting to bring back his lover. In the 2009 anime, his research was what lead to a transmutation circle that was used against Homunculus; it was used to negate Homunculus' control of alchemists' abilities.
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. 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. In Character Guidebook 3 released recently in Japan it's revealed Chris Mustang is actually the younger sister to Roy's biological father, making her his aunt. According to this guide, she took Roy in after the death of both his parents, when Roy was still very young. - fma.wikia.com
Leo's younger brother. He carries a locket of his mother with him, even though it was broken and would not open. He was captured briefly by mercenaries in Central, but was rescued by Scar, Alphonse, and Edward. Rick was nearly killed during the rescue attempt, only the locket of his mother saved him. The force placed on the locket caused it to open, revealing a picture of Rick, Leo, and their mother; additionally, several small pills for the treatment of blindness were discovered inside it. Toward the end of the anime series Edward receives permission from the military to have Rick and his older brother Leo released and transferred to Resembool; however both Rick and Leo turn down the offer. In the manga, Rick and the old man pull Scar out of the sewer in East City after Scar's first encounter with the Homunculi. They tend to his wounds until the mercenaries try to arrest Scar, then Scar leaves the slum and they are not seen again. It is implied that the fair-skinned and fair-haired manga version of this boy is half-Ishvalan (as he reassures an injured Scar that he's safe because "Mom and I are Ishvalan too!") Rick wasn't named in the manga.
Bido was a chimera created in the Fifth Laboratory; after escaping it, he followed the homunculus Greed. Before his transmutation, he was a member of Martel's military special ops team which instigated the Ishval revolt. He was fused with a lizard or a gecko; this enabled him to have a firm grip on surfaces when climbing, and to use his tail as a bludgeoning weapon. He is bald and speaks in a raspy, hacksaw voice, though it's unclear whether this is a result of the fusion or not. In the first anime, he is killed by the military. In Brotherhood, he survives instead. He searches for Greed and finds him in Father's lair. Unfortunately, the homunculus has forgotten about Bido and kills him. Afterwords, Greed's old memories start to return and Greed realizes he has killed the last member of his family with his own hands.