Roy Mustang, known by the title of the Flame Alchemist, is a State Alchemist and an officer in the Amestrian military, where he initially holds the rank of Colonel. A veteran of the Ishvalan War of Extermination, an event that marked him profoundly, he harbors the ambition of climbing the military hierarchy to become Supreme Commander and reform the country. His signature alchemical ability is the control of flames: using special gloves inscribed with a Transmutation Circle, he manipulates the oxygen concentration in the air to generate precise and powerful explosions. Recognized as a skilled strategist and a powerful combatant, he leads a team of trusted subordinates and plays a crucial role as a supervisor and ally to the Elric brothers. Over the course of his career, he is promoted to the rank of Brigadier General, distinguishing himself as a key figure in the overthrow of Amestris's corrupt government.