Gama-Tan is an enormous toad called as Erogama, is one of Lacospo's favourite pets. Its crying differs in its debut and reappearance. When its debut, it cries "Nyaa", and its reappearance, it cries "Geko". Its ability is to lets out liquid dissolving clothes. In secretive market of Galactic Courier, the spray guns which spray gas made of Erogama's oil and explosives which are made of Erogama's oil are sold. Nana's Jiro Snake is its natural enemy.