In Greek mythology, Okeanos (or Oceanus) is revered as the Titan god of the primordial river that encircles the Earth, symbolizing all freshwater sources such as rivers, springs, and rain. His sister and wife, Tethys, embodies the nurturing aspects of fresh water and motherhood. Together, they are credited with producing the Oceanids (water nymphs) and the Potamoi (river gods), their numerous offspring. Notably, Okeanos and Tethys are often portrayed as neutral figures during the Titanomachy, the war between Titans and Olympian gods, reflecting their inherently peaceful nature.

Okeanos holds significant importance in Greek mythology as a powerful deity responsible for maintaining the world's freshwater supply and regulating cosmic order. Known as Oceanus, he is depicted as the encompassing river from which all fresh water flows. He also governs the heavenly bodies that rise from and set into his waters. His union with Tethys resulted in a vast progeny of river gods and nymphs, further illustrating their role in nourishing both land and sea.

In the narrative of Simanity, Okeanos retains his original characteristics but experiences a unique fate tailored to the story's context.

Tethys, as the goddess of primal fresh water, nourishes the Earth and serves as both mother and protector of various water forms. In Simanity, she becomes the mother of Metis, Kalamos, and Perse. After giving birth to Perse alongside other deities whose purposes have been fulfilled in this narrative, Tethys ascends to Elysium—a paradisiacal realm for heroes characterized by pleasure and freedom from toil.