| A | B |
| Acheron | One of the five rivers of the Underworld; River of woe; led to Hades |
| Aeneas | Founder of the Roman race; Hero of Troy; Ancestor of Romulus and Remus |
| Cerberus | Three headed guard dog of the underworld; Kept dead from leaving the underworld |
| Charon | Ferryman of the dead; Took souls across the River Styx |
| Dis | Roman God of the underworld; Also known as Hades or Pluto |
| Elysian Fields | Where heroes spent eternity in the afterlife; perfect paradise |
| Eurydice | Daughter of Apollo; wife of Orpheus; Musician and poet |
| Ixion | Son of Ares and Perimele; gave birth to the centauros; husband to dia |
| Lake Avernis | Entrance of the underworld; inside of the volcano in Campia |
| Lethe | Daughter of Eris; oblivion personified; also name of the river of the infernal regions |
| Midas | Everything the king touched turned into gold |
| Orpheus | Greek hero given superhuman musical skills; son of Muse and Oeagrus |
| Osiris | Also called Usir; egyptian god of the underworld; drowned by Seth |
| Persephone | WIfe of Hades, Queen of the Underworld; daughter of Demeter and Zeus |
| Phlegethon | One of the five rivers of the Underworld; a son of the Cocytus;"the flaming" |
| Pluto | Greek God of the underworld; Also known as Hades; judge of the dead |
| Proserpina | Abducted by Pluto; eventually married Pluto and stayed in the Underworld |
| Sibyl | Oracles or prophets; their riddles were said to be inspired by Apollo |
| Sisyphus | King of Ephyra; forced to roll a boulder up a hill for eternity |
| Styx | One of the five rivers of the Underworld; also the name of a titan goddess |
| Tantalus | Son of Zeus and Plouto; cut up his son and served it to the gods |