Reagan is an intelligent, cynical, irritable, and socially awkward inventor and roboticist. At 30 years old, she is a half-Japanese woman with tanned skin, brown hair perpetually tied into a messy ponytail, and prominent bags under her eyes from overwork. Her typical attire is a white lab coat worn over a grey polo shirt and dark green pants. She is direct, work-obsessed, and has no patience for small talk, often coming across as dismissive.