Dr. Gero's appearance consists of slightly tanned skin, blue eyes, a large bushy white mustache, and long hair. He also has a Red Ribbon Army logo located on the hat that hides his visible brain after he turns himself into an android. Dr. Gero's mechanical body also lacks the eyebrows he had in his old, organic form, instead having a pronounced brow. His clothing is black, with orange sections at the upper arms, and light yellow sleeves at the lower arms. His pants are dark brown, and his shoes are black and white.