Eldros ist an das System der neun Höllen mit angebunden (wie andere DnD settings). Das bedeutet konkret, dass die Grundstruktur folgendermaßen aussieht:
The Nine Hells (Quelle)
| Realm | Layer | Ruler(s) | Notable Characteristics |
|---|---|---|---|
| Avernus | First | Zariel | - Rivers of blood and lava. - Fire on land and in the sky. - Frequent battles with demons attacking from the Abyss. |
| Dis | Second | Dispater | - A single, massive city of iron buildings. - Oppressive heat and smoke. - Large, noisy crowds. |
| Minauros | Third | Mammon | - Rotting, poisonous swampland. - Decaying, decrepit settlements. |
| Phlegethos | Fourth | Fiera and Belial | - Fire and lava. - Location of the Pit Of Flames, where lawbreaking devils are sent to suffer for eternity. |
| Stygia | Fifth | Levistus | - Endless icy ocean. - Frequent thunderstorms. - Large, dangerous fauna. |
| Malbolge | Sixth | Glasya | - Rocky, mountainous terrain. - Frequent rockslides. - Twisting caverns. |
| Maladomini | Seventh | Baalzebul | - Labyrinthine ruins. - Covered with filth and slime. |
| Cania | Eighth | Mephistopheles | - Lethal sub-zero temperatures. - Frequent blizzards. - Numerous glaciers. |
| Nessus | Ninth | Asmodeus | - Bleak, featureless expanse. - Red skies with frequent storms. - Bottomless lakes and canyons. |