Fumio Sudo, also known as the Chairman, was the seeming child prodigy and mathematical genius behind the creation of Children's Land, which, he claimed, was to be a charitable organization and theme park for all the world's children. In reality, Fumio Sudo had died along with his teacher Mr. Kubota in a hiking accident some years prior, and their identities adopted by alien cockroaches from the Nebula Space Hunter M, who inhabited their corpses as disguises. From their base of operations in Children's Land's imposing Godzilla Tower, the aliens posing as Fumio and Kubota planned to conquer the Earth with their monsters, Gigan and King Ghidorah. Their plans were foiled by comic book artist Gengo Kotaka and his friends, who rigged the Godzilla Tower control room to explode. Fumio was killed in the resulting destruction of the tower.