| Name | CR | MR | Type | Environment |
| Champion of the Gilded Host | 18 | 7 | construct (colossus, mythic) | any land |
| Chaneque | 1 | 1 | fey (mythic) | any forests |
| Cockatrice | 4 | 1 | magical beast (mythic) | temperate plains |
| Colossus, Flesh Colossus | 16 | 6 | construct (colossus, mythic) | any land |
| Colossus, Iron Colossus | 21 | 8 | construct (colossus, mythic) | any land |
| Colossus, Sphinx Colossus | 14 | 4 | construct (colossus, mythic) | warm deserts |
| Colossus, Stone Colossus | 19 | 7 | construct (colossus, mythic) | any land |
| Colossus, Wood Colossus | 17 | 6 | construct (colossus, mythic) | any land |
| Cyclops, Great Cyclops | 15 | 6 | humanoid (giant, mythic) | any temperate or tropical |