Barry the Chopper

Barry the Chopper was a serial killer operating in Central City until his arrest. In lieu of execution, however, he became a human test subject in the military's alchemical experiments and had his disembodied soul bound to a suit of armor, similar to Alphonse Elric. In his new form, Barry was called "Number 66" and ordered by the Homunculi to guard Central Alchemical Laboratory #5 alongside his partner, Number 48. As a result of the schism between the storylines of the Fullmetal Alchemist manga and the Fullmetal Alchemist (anime)2003 anime series, Barry the Chopper appears in both but is a rather different character in each.

Anime
Barry is first shown when he kidnaps Winry and tries to kill her. Edward Elric rescues her and defeats Barry before he kills them both. He appeares later in a suit of armour like Alphonse Elric in Lab Number 5. He plays with Al's mind, making him think he is not real. Barry escapes from the Lab and begins to work with a mercenary, killing Ishbalan people. Scar defeats him by destroying his blood seal.

Last Words: Well, this is a surpirse. A real state alchemist. Please allow me to thank you. FOR MAKING ME LOOK LIKE THIS!

Manga
Barry makes his first appearance in Lab 5 where he attacks Al. When Envy and Lust destroy the lab, Barry escapes. He is later seen when he attacks Lieutnant Hawkeye in Central. Hawkeye shoots Barry and brings him to Colonel Mustang. Mustang makes a deal with Barry and he's left to Falman's house. Sometime later, Barry frees Maria Ross from prison. Falman's house is then attacked by Barry's own body and Homunculi Gluttony and Envy. Barry fights his body and follows it to Father's hideout. He is cut to pieces by Lust and later killed by his body.

Trivia
He seems to share a crush on Riza Hawkeye confirmed by the hearts around him, and him wanting to "chop" her up.

He also seems to share a thing for Lust when he said that he wanted " to stick his cleaver in her" but it could be a joke.