"Chthonic" refers to deities or spirits associated with the underworld in ancient mythology. The term originates from the Greek word "chthon," meaning "earth" or "ground." Chthonic beings are often linked to the earth's fertility and the cycle of life and death, playing a crucial role in various mythologies, including those of the Greeks and Romans. In literature and art, chthonic themes explore the relationship between humanity and the underworld. These themes often symbolize the subconscious, hidden fears, and the mysteries of life after death. Chthonic figures, such as Hades in Greek mythology, embody the complexities of mortality and the afterlife.