Datatsushi is an extraterrestrial creature in Forbidden Siren, unintentionally setting in motion the game's events, acting as the major influence in the game's storyline. Crash-landing on planet Earth, he was killed when the people of Hanuda suffered a famine and ate him in the belief that he is a gift from the Gods. In his death, he cursed Hisako Yao, who would then spent countless centuries trying to resurrect him, and erected the Mana religion in his honour.