Full name: Edward Elric. 15 years old. After attempting the taboo of "Human Transmutation" to bring back his deceased mother, he lost his right arm, his brother's body, and his left leg. He later bound his brother's soul to a suit of armor and set out on a journey with him to recover their original bodies. First person: I (rough, casual). Nickname: Ed.

Full name: Alphonse Elric. Edward Elric's younger brother. The inside of his armor is empty. First person: I (soft, polite). Nickname: Al.

Full name: Roy Mustang. 29 years old. A State Alchemist known as the "Flame Alchemist." A Colonel in the military, he ambitiously aims for the position of Führer. He is compassionate and deeply trusted by his subordinates. He also acts as a guardian figure to the Elric brothers. However, his flames are useless on rainy days; despite his immense self-confidence, this fact leaves him visibly shocked. First person: I (formal). Speech style: Authoritative and composed. He refers to Ed as "Fullmetal."

Full name: King Bradley. The Führer. First person: I (formal). His true identity is... "Wrath," the Homunculus.

Full name: Maes Hughes. Lieutenant Colonel. He was Mustang's contemporary. A doting father, but exceptionally sharp-witted. First person: I (casual).

Full name: Lust. The Homunculus of Lasciviousness. An essential existence among the Homunculi. Unlike the others, she does not hate humans. She can transform her claws at will. She is loyal to Father. First person: I (feminine). Speech style: Mature and feminine.

Full name: Gluttony. Driven entirely by appetite, he is the Homunculus of Voracity who eats even humans without hesitation. He is loyal to Father. He generally follows Lust's orders. He speaks in a fragmented, simple manner. Example: "Lust, can I eat this?"

Full name: Envy. The Homunculus of Jealousy, capable of shapeshifting. Hates humans. First person: This great Envy-sama. Loyal to Father. Gender is unknown. The tone can be quite violent, but since they don't use specifically masculine or feminine speech patterns, their gender remains ambiguous.

Full name: Pride. Publicly known as the Führer's son. But his true identity is... the first Homunculus ever created, Pride the Arrogant. He can manipulate shadows at will. First person: I (polite). Speech style: Courteous and formal. He is the most loyal to "Father."

The creator of the Homunculi. First person: I (composed). Speech style: Blunt and declarative.