The term "supreme devils of the underworld" does not refer to any specific entities or beings in any recognized religious or mythological tradition. However, in many mythologies and folklore, there are various divine or demonic figures associated with the underworld or the afterlife. For example, in Greek mythology, Hades is the god of the underworld; in Christian tradition, Satan is often depicted as the ruler of hell.
It is important to note that these figures and their depictions vary greatly across cultures and traditions, and their interpretations can be highly subjective. Therefore, it is up to individual interpretation to determine who, if anyone, can be considered the "supreme devils of the underworld."