For information pertaining to the organizations found in Library of Ruina, such as the Fixers and Wings, see their respective page.
- The Sinners note Dante, Vergilius, Charon
- No. 1 to 6 note Yi Sang, Faust, Don Quixote, Ryōshū, Meursault, Hong Lu
- No. 7 to 13 note Heathcliff, Ishmael, Rodion, Sinclair, Outis, Gregor
- Recurring Characters note Effie and Saude, Pilot, Caiman, the LCD agent, Hermann, Jia Huan, Gubo, Captain Ahab, Aseah, Demian, Samjo, the Voice
- Canto Characters note Lion, Wolf, and Panther, Yuri, Aya, Hopkins, Old G. Corp Head Manager, Tingtang Boss, Sonya, Ada, Tieqiu Crew Boss, Siegfried, Kromer, Guido, Sinclair's Family, Papa Bongy, Bodhisattva Chicken's Manager, Dongrang, Shrenne, Niko, Ran, Marile, Dongbaek, Alfonso, Stephenette, the Tearful Thing, Man in the Mirror, Molar Boatworks, Smee, Rim, Ricardo, the Indigo Elder, Whales of the Great Lake, the Five Calamities, Crew of the Pequod, Crayon, Domino, Santata, Aeng-Du, Jun, the Mentor, Nelly, Catherine Earnshaw, Hindley Earnshaw, Linton Edgar, Josephine, Matthew, Isabella Edgar, Mr. Earnshaw, The Erlking, The Reflections
- Abnormalities
- Other Enemies note Hooligans, G Corp Veterans, Recollected G Corp Soldiers, Tingtangers, J Corp Security, Los Mariachis, Tieqiu Crew, Slaves, K Corp. Security, N Corp. Inquisition, K Corp. Drones, Rosespanner Workshop, T.L.A. Robots, T.L.A. E.G.O. Users, T Corp. Collectors, Trash Crabs, Twinhook Pirates, Mermaids, The Middle, Gnomes, The Dawn of Green - Doubt, Kurokumo Clan, T. Corp Gangsters, Dead Rabbits, Butlers, Researchers of the Ring, the Wild Hunt
