| Champion of Infernus [] | 45–55 | 1/101,580.8 |
| Chaos druid [] | 45–55 | 1/524,288 |
| Chaos druid warrior [] | 45–55 | 1/524,288 |
| Chaos dwarf [] | 45–55 | 1/104,857.6 |
| Chaos dwarf (Chaos Dwarf Battlefield) [] | 45–55 | 1/104,857.6 |
| Chaos dwarf [] | 45–55 | 1/103,219.2 |
| Chaos dwarf hand cannoneer [] | 45–55 | 1/108,134.4 |
| Chaos dwogre [] | 45–55 | 1/121,241.6 |
| Chaos Elemental (Members) [] | 45–55 | 1/3,161.41, 2 rolls |
| Chaos Giant [] | 45–55 | 1/6,400 |
| Chaos witch apprentice (Normal mode) [] | 45–55 | 1/4,800 |
| Chaos witch channeler (Level 143 (Normal mode)) [] | 45–55 | 1/4,800 |
| Chaos witch lifeweaver (Normal mode) [] | 45–55 | 1/4,800 |
| Chaos witch magus (Normal mode) [] | 45–55 | 1/4,800 |
| Chaos witch mender (Normal mode) [] | 45–55 | 1/4,800 |
| Chaos witch (Normal mode) [] | 45–55 | 1/4,800 |
| Chest (Carnillean Rising) [{'content': 'Only if the player has not already claimed it', 'name': 'claim'}] | 30 | Always |
| Cloaked zealot (Normal mode) [] | 45–55 | 1/4,800 |
| Cloaked zealot (Normal mode) [] | 45–55 | 1/4,800 |
| Cockatrice [] | 45–55 | 1/262,144 |
| Cockroach drone [] | 45–55 | 1/87,381.33 |
| Cockroach soldier [] | 45–55 | 1/74,898.29 |
| Cockroach worker [] | 45–55 | 1/104,857.6 |
| Commander Zilyana (Hard mode) [] | 45–55 | 1/3,200 |
| Commander Zilyana (Normal mode) [] | 45–55 | 1/3,161.41 |
| Cooper (Normal mode) [] | 45–55 | 1/4,800 |
| Corporeal Beast [] | 150 | 10/512 |
| Corporeal Beast [] | 45–55 | 1/209,715.2, 10 rolls |
| Corrupted dust devil [] | 45–55 | 1/4,800 |
| Corrupted kalphite guardian [] | 45–55 | 1/4,800 |
| Corrupted kalphite marauder [] | 45–55 | 1/4,800 |
| Corrupted lizard [] | 45–55 | 1/4,800 |
| Corrupted scarab [] | 45–55 | 1/4,800 |
| Corrupted scorpion [] | 45–55 | 1/4,800 |
| Corrupted worker [] | 45–55 | 1/4,800 |
| Crassian Leviathan (Normal mode) [] | 45–55 | 1/4,800 |
| Crassian scout (Normal mode) [] | 45–55 | 1/4,800 |
| Crassian scuttler (Normal mode) [] | 45–55 | 1/4,800 |
| Crassian warrior (Normal mode) [] | 45–55 | 1/4,800 |
| Crawling hand [] | 45–55 | 1/262,144 |
| Crocodile akh [] | 45–55 | 1/4,800 |
| Crystal Shapeshifter (Magic) [] | 45–55 | 1/4,800 |
| Cyclops [] | 45–55 | 1/204,800 |
| Cyclops [] | 45–55 | Very rare |
| Cyclops (God Wars Dungeon) [] | 45–55 | 1/204,800 |
| Cyclossus [] | 45–55 | 1/6,400 |
| Dagannoth (Lighthouse) [] | 45–55 | 1/524,288 |
| Dagannoth guardian [] | 45–55 | 1/65,536 |