| Name | Attribute | Level | Type |
|---|---|---|---|
| Contaminated Keefodil | - | 1 | General |
| Contaminated sludge | 106 | General Monster | |
| Contaminated sludge | 106 | General Monster | |
| Contaminated sludge | 106 | General Monster | |
| Continue escorting Huey. | - | 1 | General |
| Continue on your journey. | - | 1 | General |
| Continue on your journey. | - | 1 | General |
| Cooking Area | - | 1 | Interactive |
| Cooking Station | - | 1 | General |
| Cooking Table | - | 1 | Interactive |
| Cooking utensils for the competition. | - | 1 | General |
| Cool Down Pond | - | 58 | General Monster |
| Cooldown Pool | - | 58 | General Monster |
| Cooldown Pool | - | 38 | General Monster |
| Cooldown Pool | - | 58 | General Monster |
| Cooldown Pool | - | 58 | General Monster |
| Cooldown Pool | - | 38 | General Monster |
| Cooldown Pool | - | 58 | General Monster |
| Cooldown Pool | - | 61 | General Monster |
| Cooling Water Pool | - | 64 | General Monster |
| Cooling Water Pool | - | 64 | General Monster |
| Coralhorn Deer | 61 | General Monster | |
| Core of the Magic Circle | - | 95 | Elite Monster |
| Corinn | - | 1 | General Monster |
| Corinn's soldiers. | - | 1 | General |
| Corinn's soldiers. | - | 1 | General |
| Corinn's soldiers. | - | 1 | General |
| Corinn's soldiers. | - | 1 | General |
| Corinn's soldiers. | - | 1 | General |
| Corinn's soldiers. | - | 1 | General |
| Corinn's soldiers. | - | 1 | General |
| Corinn's soldiers. | - | 1 | General |
| Corinn's soldiers. | - | 1 | General |
| Corknelov | 54 | General Monster | |
| Corn Master Maize | - | 1 | General |
| Cornfield | - | 1 | Interactive |
| Corrupted Soul | 74 | Elite Monster | |
| Corrupted Soul | 74 | Elite Monster | |
| Corrupting Zombie Lord | - | 5 | General |
| Corsten | - | 1 | General |
| Cosea | - | 1 | General |
| Cosmic Coast | - | 1 | General |
| Coughing Forest Sprite | - | 1 | General |
| Countdown Cadan | 101 | Boss Monster | |
| Countdown Cadan | - | 1 | General |
| Couple's Merchant Lilian | - | 1 | General |
| Courier | - | 1 | General |
| Courier Layla | - | 15 | General |
| Covington's Royal Guards | - | 1 | General |
| Cow | - | 1 | Interactive |