Bowzock's best eater. Grotch brought him along to find out which Earth food made Bowzock enlarge, using Ichitaro as a hostage for Souichirou to bring them the food Grotch ate earlier, including Imo-Youkan. However, he brought non-Imocho-brand Imo-youkan and Mogu shrank as he and Grotch ran away from the Tenma men. Mogu stayed this way for a week until he and Grotch made their way to Imocho, buying enough Imo-youkan to turn the tiny Mogu into a giant. Mogu was reluctant to attack, due to belly button lint, until Grotch talked the Gorotsuki into ignoring such a minor concern and go on an enlarged feeding frenzy. Mogu was the first to be killed by the RV Robo, as he was too busy eating to see the final attack coming.