| Cave bug [] | 35–45 | 1/104,857.6 |
| Cave crawler [] | 35–45 | 1/524,288 |
| Cave crawler [] | 35–45 | 1/174,762.67 |
| Cave horror [] | 35–45 | 1/6,400, 3 rolls |
| Cave slime [] | 35–45 | 1/131,072 |
| Celestial dragon [] | 1 | Always |
| Celestial dragon (Dragonkin Laboratory) (Normal mode) [] | 35–45 | 1/4,800 |
| Celestial dragon (Dragonkin Laboratory) (Normal mode,Story mode) [] | 1 | Always |
| Champion of Infernus [] | 35–45 | 1/101,580.8 |
| Chaos druid [] | 35–45 | 1/524,288 |
| Chaos druid warrior [] | 35–45 | 1/524,288 |
| Chaos dwarf [] | 35–45 | 1/104,857.6 |
| Chaos dwarf (Chaos Dwarf Battlefield) [] | 35–45 | 1/104,857.6 |
| Chaos dwarf [] | 35–45 | 1/103,219.2 |
| Chaos dwarf hand cannoneer [] | 35–45 | 1/108,134.4 |
| Chaos dwogre [] | 35–45 | 1/121,241.6 |
| Chaos Elemental (Members) [] | 1 | 1/12 |
| Chaos Elemental (Members) [] | 35–45 | 1/3,161.41, 2 rolls |
| Chaos Giant [] | 35–45 | 1/6,400 |
| Chaos witch apprentice (Normal mode) [] | 35–45 | 1/4,800 |
| Chaos witch channeler (Level 143 (Normal mode)) [] | 35–45 | 1/4,800 |
| Chaos witch lifeweaver (Normal mode) [] | 35–45 | 1/4,800 |
| Chaos witch magus (Normal mode) [] | 35–45 | 1/4,800 |
| Chaos witch mender (Normal mode) [] | 35–45 | 1/4,800 |
| Chaos witch (Normal mode) [] | 35–45 | 1/4,800 |
| Chest (Rogues' Castle) [] | 8 | Common |
| Clan goodie bag [] | 3 | 453/9,435, 3 rolls |
| Cloaked zealot (Normal mode) [] | 35–45 | 1/4,800 |
| Cloaked zealot (Normal mode) [] | 35–45 | 1/4,800 |
| Cockatrice [] | 35–45 | 1/262,144 |
| Cockroach drone [] | 35–45 | 1/87,381.33 |
| Cockroach soldier [] | 35–45 | 1/74,898.29 |
| Cockroach worker [] | 35–45 | 1/104,857.6 |
| Commander Zilyana (Hard mode) [] | 35–45 | 1/3,200 |
| Commander Zilyana (Normal mode) [] | 35–45 | 1/3,161.41 |
| Cooper (Normal mode) [] | 35–45 | 1/4,800 |
| Corporeal Beast [] | 35–45 | 1/209,715.2, 10 rolls |
| Corrupted dust devil [] | 35–45 | 1/4,800 |
| Corrupted kalphite guardian [] | 35–45 | 1/4,800 |
| Corrupted kalphite marauder [] | 35–45 | 1/4,800 |
| Corrupted lizard [] | 35–45 | 1/4,800 |
| Corrupted scarab [] | 35–45 | 1/4,800 |
| Corrupted scorpion [] | 35–45 | 1/4,800 |
| Corrupted worker [] | 35–45 | 1/4,800 |
| Crassian Leviathan (Normal mode) [] | 35–45 | 1/4,800 |
| Crassian scout (Normal mode) [] | 35–45 | 1/4,800 |
| Crassian scuttler (Normal mode) [] | 35–45 | 1/4,800 |
| Crassian warrior (Normal mode) [] | 35–45 | 1/4,800 |