The Reverse Outer Wall (異界側外壁 Underworld Side Outer Wall) is a copy of the normal Outer Wall, except for the color tones and of course that it is upside down.
Not too much to tell about this place, you can find items in the same places as in the normal outer wall, the enemies are a lot tougher though. It is noticeably filled with Stone Skulls which cannot be destroyed.
Its theme is Finale Toccata.
|Enemy Data: Reverse Outer Wall|
|Image||Name - Game|
|Indestructible spinning skull.|| Level: 1|
| Black Marble Gallery, Reverse Colosseum, Reverse Outer Wall|
|Expert at throwing weapons.|| Weak: Holy|
| Drop: Shuriken, Flame Star|| Black Marble Gallery, Reverse Caverns, Reverse Entrance, Reverse Outer Wall, Soul Prison (Saturn-only)|
|Giant skeleton.|| Weak: Holy|
| Drop: Gauntlet, Ring of Varda (if one or more complete game saves), Turquoise (if no complete saves, drops instead of Ring of Varda)|| Colosseum, Reverse Outer Wall|
|Wields fearsome beam weapon.|| Level: 35|
| Drop: Monster Vial 3, Terminus Est|| Black Marble Gallery, Reverse Caverns, Reverse Entrance, Reverse Outer Wall, Soul Prison (Saturn-only)|
|Made from the body parts of powerful warriors.|| Strong: Thunder (immune)|
| Guard: Tooth of Vlad|| Reverse Outer Wall|