In Aztec beliefs, the god of death and the underworld is Tezcatlipoca. Often depicted as a powerful and enigmatic figure, Tezcatlipoca embodies the dualities of life and death, fate, and change. His role reflects the Aztec understanding of and reverence for the cycle of life. He governs the afterlife realms and is also associated with warrior culture and sacrifice. This duality illustrates the Aztec belief that death is not an endpoint but a crucial part of existence, emphasizing the importance of honoring the gods through rituals and offerings.