| Ravenous ghoul [] | 1 | 1/512 |
| Red dragon [] | 1 | 1/204.8 |
| Reinforced Chest (East Ardougne) [] | 1 | 277/1,431 |
| Ripper Demon [] | 1 | 1/128 |
| Rock [] | 1 | 1/204.8 |
| Rock crab [] | 1 | 1/1,024 |
| Rock golem [] | 1 | 1/512 |
| Rock lobster [] | 1 | 1/512 |
| Rock slug [] | 1 | 1/256 |
| Salarin the Twisted [] | 1 | 1/1,024 |
| Sanguine crawler [] | 1 | 1/128 |
| Sarcophagus (Jaldraocht Pyramid) [] | 1 | Rare |
| Scabaras lancer [] | 1 | 1/73.14, 2 rolls |
| Scabaras mage [] | 1 | 1/73.14, 2 rolls |
| Scabaras ranger [] | 1 | 1/73.14, 2 rolls |
| Scarab mage [] | 1 | 1/73.14 |
| Sea Snake Hatchling [] | 1 | 1/1,024 |
| Sea Snake Young [] | 1 | 1/1,024 |
| Seasinger priestess [] | 1 | 1/512 |
| Sedimentary geode [] | 1 | 5/200 |
| Seeker [] | 1–5 | 6/128 |
| Seren archer [] | 1 | 1/201.6 |
| Seren mage [] | 1 | 1/201.6 |
| Seren warrior [] | 1 | 1/201.6 |
| Shadow demon [] | 1 | 1/193.6 |
| Shadow warrior [] | 1 | 1/128 |
| Sir Carl [] | 1 | 1/512 |
| Sir Harry [] | 1 | 1/512 |
| Sir Jerro [] | 1 | 1/512 |
| Skeletal miner [] | 1 | 1/512 |
| Skeletal Wyvern [] | 1 | 2/128 |
| Skeleton (Dark Warriors' Fortress) [] | 1 | 1/512 |
| Skeleton [] | 1 | 1/1,024 |
| Skeleton [] | 1 | 1/201.6 |
| Skeleton (Tarn's Lair) (High level) [] | 1 | 1/512 |
| Skeleton (Tarn's Lair) (Low level) [] | 1 | 1/512 |
| Skeleton (Tarn's Lair) (Medium level) [] | 1 | 1/512 |
| Skeleton (Ullek) [] | 1 | 1/512 |
| Skeleton brute [] | 1 | 1/492 |
| Skeleton fremennik [] | 1 | 1/512 |
| Skeleton heavy [] | 1 | 1/492 |
| Skeleton hero [] | 1 | 1/492 |
| Skeleton Mage [] | 1 | 1/1,024 |
| Skeleton Mage (Piscatoris Fishing Colony) [] | 1 | 1/192 |
| Skeleton thug [] | 1 | 1/492 |
| Skeleton warlord [] | 1 | 1/492 |
| Skeleton (Armed) [] | 1 | 1/512 |
| Skeleton (Unarmed) [] | 1 | 1/1,024 |