Olivier Mira Armstrong

Olivier carries the unmistakable stamp of the Armstrong bloodline, a pale-skinned beauty with waist-length blond hair that runs mostly straight before curling at the tips, one side sweeping down to hide her right eye. Her gaze is sharp and narrow, set in pale to deep blue, and her lips are unusually full, a feature she shares with only Lust and Martel across the whole series. Slender yet visibly muscled, she projects authority through her bearing alone. Fans and creators alike read the hair veiling half her face as a mask for the gentler feelings she keeps buried, with the exposed eye letting that warmth occasionally peek through.

Severe and commanding, Olivier rules through a cold intensity that leaves subordinates and rivals wary of crossing her, and her open delight in others' failings won her the Ice Queen title among the Briggs ranks. She lives by a survival-of-the-fittest creed, has no patience for weakness or faint will, and openly scorns the notion of equivalent exchange as a crutch for the lazy. Beneath the venom, though, sits a razor-sharp strategist, perceptive and adaptable, able to lie, manipulate, and switch tactics the instant a situation turns.

For all her harshness, she never loses sight of the value of the people around her. She grasps that her position rests on the backing of her soldiers and treats each life as carrying real weight, leading from the front and returning her men's loyalty with equal trust. Careful observers catch a selfless, protective streak in her, a willingness to gamble her own safety for those who have staked their faith in her, even if she would never confess to any soft spot.

A master of the family's heirloom saber and lethally accurate with everything from pistols to grenade launchers, Olivier is stronger than her slim frame suggests and unshaken in the thick of combat. She enters the tale when the Elric brothers arrive at Briggs bearing a letter from her brother Alex, which she dismisses out of hand, insisting she judges people only by her own eyes. When the homunculus Sloth blunders into the fortress, she turns the crisis into a loyalty test, mounting a tank and using the brutal cold to freeze the intruder solid.

Drawn into the wider conspiracy, Olivier learns of the nationwide transmutation circle and the rot inside Central Command. She kills the corrupt General Raven, answers King Bradley's summons, and plays a ruthless double agent to mine the military's secrets, coming face to face with Father and his stockpiled immortal soldiers. After forcing her father Philip into retirement and thrashing Alex for the family estate, she quietly relocates the Briggs forces into the Armstrong mansion ahead of the coming war.

On the Promised Day she cuts through waves of homunculi in Central Command, breaks off her rivalry with Alex long enough to battle Sloth at his side, and, with Izumi and Sig Curtis, helps bring the creature down. Her soul is torn out when Father activates his circle, only to be restored along with the rest of Amestris. In the aftermath she has Briggs pull survivors from the wrecked headquarters, secretly saving Scar so he might work with Miles to rebuild the Ishvalan people, and she closes the series still exasperated by her younger brother.