After the Great Cataclysm, they were the ones who oversaw the construction of Shinjuku Babel. Though they all share the same goal of bringing about humanity's resurgence, many of the Philosophers possess different beliefs about how the world should be run.
- Kuzaka The Wise - Creator of Shinjuku Babel and the Innocents, regarded as a sage even among the other Philosophers. His whereabouts are unknown.
- Lord Judah - Leader of the Order of Messiah. Judah is associated with the Law alignment.
- Lord Doukan - Leader of the Cult of Gaia. Doukan is associated with the Chaos alignment.
- Madam Justice - Leader of Protopia, the neutral city. Justice is associated with the Neutral alignment.
|Characters||Protagonist - Azura - DB Mikanagi - DB Kano - DB Kuroe - DB Yamaguchi - Kuzaka The Wise - Lord Judah - Madam Justice - Lord Doukan - Ogami - Setsu - Snakeman - Yamamoto the Steel-Willed - Louis Cyphre|
|Locations||Arcadia - Cathedral of Shadows - Ichigaya - Ikebukuro - Nakano - Protopia - Second Home - Shibuya - Shinagawa - Shinjuku - Shinjuku Babel - Souhonzan - Suginami - Third Home - Ueno|
|Dungeons||Suginami Tunnels - Basilica|
|Music||"Amatsuchi" - "Haru Megido"|
|Terminology||Cult of Gaia - Demon Buster - Great Cataclysm - Innocent - Millennium Kingdom - Obelisk - Order of Messiah - Seven Philosophers - Yagi - Chain of Curse|
|Archives||Demons - Skills (Features)|