Ran

This alien girl has known Lum since childhood and makes her entrance at Tomobiki High School as a new transfer student. While she projects a gentle and fragile image to those around her, she secretly harbors an intense resentment toward Lum. When her emotions spiral out of control or she finds herself alone with Lum, her true self emerges—rough-spoken in heavy dialect and quick to anger—as she repeatedly schemes to take Ataru away from Lum in pursuit of revenge.