| Butcher demon [] | 45–55 | 1/1,268,776.96 |
| Cabbagemancer [] | 1 | 1/585.14 |
| Cabbagemancer [] | 45–55 | 1/479,349.03 |
| Cabinet [] | 1 | 2/200 |
| Cadarn magus [] | 45–55 | 1/102,400 |
| Cadarn ranger [] | 45–55 | 1/102,400 |
| Camel Warrior [] | 45–55 | 1/40,960 |
| Casket [] | 1 | 2/128 |
| Catablepon [] | 1 | 1/3,232 |
| Catablepon [] | 45–55 | 1/2,647,654.4 |
| Cave bug [] | 1 | 1/1,638.4 |
| Cave bug [] | 45–55 | 1/1,342,177.28 |
| Cave crawler [] | 1 | 1/8,192 |
| Cave crawler [] | 45–55 | 1/6,710,886.4 |
| Cave crawler [] | 1 | 1/2,730.67 |
| Cave crawler [] | 45–55 | 1/2,236,962.13 |
| Cave horror [] | 45–55 | 1/81,920, 3 rolls |
| Cave slime [] | 1 | 1/2,048 |
| Cave slime [] | 45–55 | 1/1,677,721.6 |
| Celestial dragon (Dragonkin Laboratory) (Normal mode) [] | 45–55 | 1/61,440 |
| Champion of Infernus [] | 1 | 1/1,587.2 |
| Champion of Infernus [] | 45–55 | 1/1,300,234.24 |
| Chaos druid [] | 1 | 1/8,192 |
| Chaos druid [] | 45–55 | 1/6,710,886.4 |
| Chaos druid warrior [] | 1 | 1/8,192 |
| Chaos druid warrior [] | 45–55 | 1/6,710,886.4 |
| Chaos dwarf [] | 1 | 1/1,638.4 |
| Chaos dwarf [] | 45–55 | 1/1,342,177.28 |
| Chaos dwarf (Chaos Dwarf Battlefield) [] | 1 | 1/1,638.4 |
| Chaos dwarf (Chaos Dwarf Battlefield) [] | 45–55 | 1/1,342,177.28 |
| Chaos dwarf [] | 1 | 1/1,612.8 |
| Chaos dwarf [] | 45–55 | 1/1,321,205.76 |
| Chaos dwarf hand cannoneer [] | 1 | 1/1,689.6 |
| Chaos dwarf hand cannoneer [] | 45–55 | 1/1,384,120.32 |
| Chaos dwogre [] | 1 | 1/1,894.4 |
| Chaos dwogre [] | 45–55 | 1/1,551,892.48 |
| Chaos Elemental (Members) [] | 1 | 1/4,096, 2 rolls |
| Chaos Elemental (Members) [] | 45–55 | 1/40,466.03, 2 rolls |
| Chaos Giant [] | 45–55 | 1/81,920 |
| Chaos witch apprentice (Normal mode) [] | 45–55 | 1/61,440 |
| Chaos witch channeler (Level 143 (Normal mode)) [] | 45–55 | 1/61,440 |
| Chaos witch lifeweaver (Normal mode) [] | 45–55 | 1/61,440 |
| Chaos witch magus (Normal mode) [] | 45–55 | 1/61,440 |
| Chaos witch mender (Normal mode) [] | 45–55 | 1/61,440 |
| Chaos witch (Normal mode) [] | 45–55 | 1/61,440 |
| Chest (Ardougne Castle) [] | 1 | 185/1,226 |
| Chest (Rogues' Castle) [] | 1–3 | Common |
| Cloaked zealot (Normal mode) [] | 45–55 | 1/61,440 |