Indonesia, the largest archipelago country, is rich in narratives about its waters and the powerful female figures within them. Indonesian myths recognize powerful figures such as Nyi Roro Kidul, the queen of the South Sea; Putri Mandalika of the Lombok Sea; Putri Hijau of the Aceh Sea; and Dewi Lanjar of the North Sea. This study uses Barbara Creed's concept of the monstrous feminine to analyze these figures, focusing on their complex relation to water and nature from the ecofeminist lens. Are these women viewed merely as monstrous, encapsulating negative stereotypes about femininity, or celebrated as powerful, fiery entities akin to female superheroes in contemporary entertainment? These narratives portray women as supernatural beings commanding the oceans, prompting discussions about women's power and the materiality of the female body. Through the lens of the monstrous feminine, this study reveals insights into their dual nature as both fearsome and empowering tricksters.