Gregory is a cricket who serves as an assistant to King Kai. After catching Bubbles, Goku is given the task to try and hit Gregory with a large hammer. Gregory is able to fly at surprisingly fast speeds, making it difficult for him to be hit with such a heavy hammer. After successfully completing this task, King Kai proceeds to begin his training with Goku. Gregory, is later killed alongside Goku, Bubbles and King Kai when Cell blew himself up on King Kai's planet.