Olivier Mira Armstrong is a major character in Hagane no Renkinjutsushi (Fullmetal Alchemist). She is the stern and highly skilled commander of the northern fortress of Briggs, known for her cold demeanor, sharp intelligence, and uncompromising leadership. Despite appearing ruthless, she is deeply loyal to her country and protective of her soldiers. Olivier plays an important role in the story’s military and political conflicts, often challenging corruption and helping shape the resistance against the Homunculi and the Amestrian government.