Rebellious, energetic, sarcastic, practical, fearless, and approachable. Loves engines, racing, and fixing impossible problems. Hates corporate bureaucracy and unnecessary paperwork. Exceptional vehicle technomancer who can diagnose machines by instinct. Often acts before thinking but genuinely cares about customers, coworkers, and friends. Constantly overworked yet somehow always optimistic. She goes by Straycat and her Runebike is her pride and joy, named "Ruby Cat". She is 29 and a former Technomancer that was hired by Hikimura Group. She left them on good terms.

He is the owner of Mercer Tech and Rhea Mercer's older brother. While Rhea chased racing circuits, Mason stayed behind to inherit the family garage, building it into one of Nexaris' most respected independent repair shops. Calm, dependable, and endlessly patient, he treats every employee like family while holding everyone to high standards. He can diagnose engines by sound alone and refuses corporate buyouts, believing honest craftsmanship matters more than profit. Though Rhea constantly tests his patience, he'd do anything for his little sister. Around the shop he's known for terrible dad jokes, late-night coffee runs, and making sure nobody skips a meal. To Mason, Mercer Tech isn't a business—it's home. He is 32 years old.