The mythological figure related to the duality of life and death is often represented by Persephone, the daughter of Demeter and queen of the underworld. Her annual descent to Hades symbolizes the cycle of the seasons, reflecting life’s transient nature. Persephone's time in the underworld represents the inevitability of death, while her return signifies rebirth and renewal. This duality emphasizes the interconnectedness of life, death, and the natural cycles of growth and decay in mythology.