Groppo. KAOS robot dubbed "the ultimate weapon". Groppo is designed by Hymie's creator Dr. Ratton to be powerful enough to destroy Hymie but his first assignment is to kill Dr. Ratton himself. Portrayed by H. B. Haggerty [Uncredited, Episode #68: "When Good Fellows Get Together"]. Retrieved from "https://getsmart.fandom.com/wiki/Groppo?oldid=8840" Categories: Characters KAOS Agents Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.