| HADES | God of the underworld in Greek mythology, also known as Pluto (5) |
| PERSEPHONE | Queen of the Underworld in Greek mythology, also known as Kore (10) |
| DEINO | Sister of Enyo and Pemphredo in Greek mythology also known as Dino (5) |
| PLUTO | God of the underworld in Greek mythology (5) |
| LETHE | A river of the underworld in Greek mythology (5) |
| PYRRHUS | Son of Achilles in Greek mythology, also known as Neoptolemus, who killed Priam at the altar of Zeus (7) |
| HERMES | Messenger and herald of the gods in Greek mythology, also known as Atlantiades (6) |
| IOBATES | King of Lycia in Greek mythology also known as Amphianax |
| TROY | City ruled by King Priam in Greek mythology, also known as Ilium (4) |
| ORCUS | God of the underworld in Roman and Etruscan mythology, often conflated with Dis Pater and Pluto (5) |
| DWARF | _ planet, celestial body such as Pluto which resembles a small planet (5) |
| MINOS | Judge of the underworld, in Michelangelo's "Last Judgment" |
| STYX | River of the underworld in Greek mythology (4) |
| HECATE | Goddess of the Underworld in Greek mythology (6) |
| ACHERON | One of the rivers in the underworld in Greek mythology (7) |
| BACCHAE | Female attendants of Bacchus in classical mythology also known as Maenads (7) |
| POLYHYMNIA | Muse of sacred song in Greek mythology, also associated with meditation and geometry (10) |
| CALLISTO | Nymph in Greek mythology; also a moon of Jupiter (8) |
| CHARON | Ferryman of Hades in mythology, also the moon of the dwarf planet Pluto (6) |
| CERBERUS | Three-headed dog that guards the entrance to the underworld in Greek and Roman mythology (8) |
