| Sea horror (Normal mode) [] | 65–85 | 1/2,400 |
| Sea Snake Hatchling [] | 65–85 | 1/262,144 |
| Sea Snake Young [] | 65–85 | 1/262,144 |
| Seasinger priestess [] | 4–10 | 6/128 |
| Seasinger priestess [] | 65–85 | 1/131,072 |
| Seeker [] | 65–85 | Very rare |
| Seiryu the Azure Serpent (Normal mode) [] | 65–85 | 1/2,400 |
| Seren archer [] | 65–85 | 1/51,609.6 |
| Seren mage [] | 65–85 | 1/51,609.6 |
| Seren spirit [] | 65–85 | 1/16 |
| Seren warrior [] | 65–85 | 1/51,609.6 |
| Shadow demon [] | 65–85 | 1/49,561.6 |
| Shadow nihil [] | 65–85 | 1/1,600 |
| Shadow warrior [] | 65–85 | 1/32,768 |
| Shrine Maiden Elei (Normal mode) [] | 65–85 | 1/2,400 |
| Shul the Molten (Normal mode) [] | 65–85 | 1/2,400 |
| Siege engine [] | 10–16 | 10/128 |
| Silver key black [] | 5–14 | 8/1,530 |
| Silver key brown [] | 7–15 | Rare |
| Silver key crimson [] | 7–15 | Rare |
| Silver key purple [] | 5–14 | 4/1,530 |
| Silver key red [] | 7–15 | Rare |
| Sir Carl [] | 65–85 | 1/131,072 |
| Sir Harry [] | 65–85 | 1/131,072 |
| Sir Jerro [] | 65–85 | 1/131,072 |
| Skeletal miner [] | 65–85 | 1/131,072 |
| Skeleton (Dark Warriors' Fortress) [] | 65–85 | 1/131,072 |
| Skeleton [] | 65–85 | 1/262,144 |
| Skeleton [] | 65–85 | 1/51,609.6 |
| Skeleton (Tarn's Lair) (High level) [] | 65–85 | 1/131,072 |
| Skeleton (Tarn's Lair) (Low level) [] | 65–85 | 1/131,072 |
| Skeleton (Tarn's Lair) (Medium level) [] | 65–85 | 1/131,072 |
| Skeleton (Ullek) [] | 65–85 | 1/131,072 |
| Skeleton brute [] | 65–85 | 1/125,952 |
| Skeleton fremennik [] | 65–85 | 1/131,072 |
| Skeleton heavy [] | 65–85 | 1/125,952 |
| Skeleton hero [] | 65–85 | 1/125,952 |
| Skeleton Mage [] | 65–85 | 1/262,144 |
| Skeleton Mage (Piscatoris Fishing Colony) [] | 65–85 | 1/49,152 |
| Skeleton thug [] | 65–85 | 1/125,952 |
| Skeleton warlord [] | 65–85 | 1/125,952 |
| Skeleton (Armed) [] | 65–85 | 1/131,072 |
| Skeleton (Unarmed) [] | 65–85 | 1/262,144 |
| Slasher Demon [] | 65–85 | 1/1,525.51, 3 rolls |
| Small lizard [] | 65–85 | 1/52,428.8 |
| Smoke nihil [] | 65–85 | 1/1,600 |
| Smoulders (Normal mode) [] | 65–85 | 1/2,400 |
| Sofiya [] | 65–85 | 1/1,048,576 |