In Roman mythology, the god of the underworld is Pluto. He presides over the realm of the dead, governing the departed souls and ensuring they find their place in the afterlife. As a symbol of wealth and abundance, Pluto's character also reflects the dual nature of death as both an end and a transformation. The myths surrounding Pluto often explore themes of morality and the consequences of one's earthly actions, emphasizing the interconnectedness of life and death. His presence in the mythological landscape underscores the importance of the underworld within the broader understanding of existence in ancient Roman beliefs.