Top Man (タップマン Tappuman) is a Robot Master created by Dr. Light and Dr. Wily to work on other planets in search for the Energy Elements needed to build Gamma, but he was reprogrammed and used for combat by Dr. Wily in Mega Man 3.
Top Man is equipped with an auto balance system within his body, allowing him to spin rapidly much like a top, which he uses as an attack called the Top Spin to injure enemies, and as a defensive mechanism because the high rotational speeds make projectiles deflect off of him. However, he can't spin for too long because he gets dizzy, and maintaining such high speeds could damage his internal components. Top Man also attacks by tossing rapidly spinning tops from his head or shooting tops from his arm cannon.