Dandadans debut episode introduced the Serpoinans and their obsession with collecting banana organs to further their evolution. However, they were defeated by the awakening of Ayase Momo and Okaruns powers. Seemingly unwilling to accept defeat, the Serpoians returned in the ninth episode of Dandadan, but with other species like Nessie the Loch Ness monster to finally capture Momo and Okarun, extract their banana organs, and find out more about their powers.