Scorpio is the Zodiac Symbol for the dates of October 24 through November 22 of the "Tropical Calendar" (his Zodiac element is water) and is part of the Constellation Droid series of Robot Masters. Much like his Zodiac sign, he has a scorpion-like appearance. Scorpio dwells in a flying fortress high above the Pacific Ocean with his minions and he is equipped with the Hail Storm, a powerful water-based weapon that can freeze his opponents in their tracks from a great distance.
The Robot Masters that Dr. Wily sends to accompany him in his domain are Cloud Man and Yamato Man.