Mii is a little girl from the town of Greenfield, the daughter of two researchers. In the movie Spell of the Unown, both her parents disappear; first her unnamed mother, then her father Sully, leaving her in the care of the family servants. Her father left behind a mysterious puzzle box with Unown letter tiles.
She uses the tiles to spell the names of people important to her, and when she begins to cry, the Unown spring to life and grant her wish The town is engulfed by crystal, enveloping everything and driving everyone but Mii from the mansion. Mii's wish for better companionship brings about a bizarre entity -- just before he had left, Suly had read her a story about the great volcano beast Entei, and so the Unown summon a spectral Entei to serve as her father.
