| Name | Type | Class | Level | Zone |
| Baron Schism | Feature Monster | Demon | 45 | |
| Baron Shardbane | Feature Monster | Demon | 44 | |
| Beast of Abadon | Feature Monster | Demon | | |
| Blade Husk | Monster | Demon | 3 | Upper Kingsway Sewers |
| Blade Minion | Monster | Demon | | |
| Blood Angel | Feature Monster | Demon | | |
| Carnagor | Monster | Demon | | |
| Crested Stalker | Monster | Demon | | Death's City, Whitehall |
| Darkspawn Diabolist | Monster | Demon | | |
| Darkspawn Scout | Monster | Demon | | |
| Death Maggot | Monster | Demon | | |
| Emperor Gulkar | Feature Monster | Demon | 6 | British Museum |
| Fiend Master | Monster | Demon | 6 | British Museum |
| Gremlin Diabolist | Monster | Demon | | |
| Gremlin Scout | Monster | Demon | | |
| Gremlin Sniper | Monster | Demon | | |
| Gremlin Trooper | Monster | Demon | 15 - 20 | Forgotten Ducts, Temple Approach |
| Gutgore | | Demon | | |
| Imp Diabolist | Monster | Demon | | |
| Imp Scout | Monster | Demon | | |
| Imp Sniper | Monster | Demon | 2 - 5 | British Museum, Covent Garden Market, Covent Garden Steam Tunnels, Holborn Access Shafts |
| Imp Trooper | Monster | Demon | 3 - 5 | Covent Garden Approach, Covent Garden Train Depot, Piccadilly Circus, Upper Kingsway Sewers |
| Infector | Quest Monster | Demon | 19 | Barge House |
| Lady Ranrilper | Feature Monster | Demon | 41 | |
| Lord Chrearrad | Feature Monster | Demon | 29 | Finsbury Market |
| Lord Dreenny | Feature Monster | Demon | 54 | |
| Lord Joirtas | Feature Monster | Demon | 30 | St. Paul's Hellgate |
| Lord Loenine | Feature Monster | Demon | 25 | King William Street |
| Lord Mordehl | Feature Monster | Demon | 48 | |
| Lord Nurrar | Feature Monster | Demon | 56 | |
| Lord Smuiphit | Feature Monster | Demon | 29 | Finsbury Market |
| Lord Tansayrad | Feature Monster | Demon | 15 | Waterloo Bridge |
| Mangy Stalker | | Demon | 2 - 5 | Covent Garden Train Depot, Holborn Access Shafts |
| Panclast | Feature Monster | Demon | 23 | Tower Gateway |
| Phenomenae | Quest Monster | Demon | 13 | Downing Street |
| Rotted Hulk | Monster | Demon | | |
| Screecher | Monster | Demon | | Upper Ground |
| Sekworm | Feature Monster | Demon | 6 | British Museum |
| Shock Husk | Monster | Demon | 5 | Covent Garden Market |
| Shock Minion | Monster | Demon | | |
| Shock Servant | Monster | Demon | | |
| Shock Slayer | Monster | Demon | 25 | Mark Lane Approach |
| Shulgoth | Feature Monster | Demon | 5 | Covent Garden Market |
| Spikelord | Feature Monster | Demon | | |
| Stalker | Monster | Demon | 3 - 5 | Covent Garden Approach, Covent Garden Market |
| Sumatran Rat Monkey | | Demon | 2 | Holborn Access Shafts |
| The Gatekeeper | Feature Monster | Demon | | |
| The Phantom | Feature Monster | Demon | | |
| The Psyche of 314 | Quest Monster | Demon | 17 | Mind of 314 |
| The Sandman | Quest Monster | Demon | 17 | Waterloo |
| Vortex Goliath | Monster | Demon | 20 - 25 | Lower Thames |
| Winged Imp | Monster | Demon | | |
| Zeder | Feature Monster | Demon | 11 | |