"Dr. Gero?" Goku, Piccolo, Vegeta, Tien Shinhan, Yamcha, Krillin, Chiaotzu, and Puar all looked puzzled. Only Yamcha and Puar frowned as they tried to recall why Dr. Gero's name sounded familiar. "Dr. Gero..." Bulma thought for a moment, then clenched one delicate hand into a fist and struck the palm of the other. Suddenly, she cried, "I remember!" "At the 21st World Martial Arts Tournament—the one He-El won—Dr. Gero led Red Ribbon Army soldiers to rob He-El Food Company and the artificial intelligence company in West City.