| Name | Attribute | Level | Type |
|---|---|---|---|
| Corinn | - | 1 | General Monster |
| Core of the Magic Circle | - | 95 | Elite Monster |
| Coralhorn Deer | 61 | General Monster | |
| Cooling Water Pool | - | 64 | General Monster |
| Cooling Water Pool | - | 64 | General Monster |
| Cooldown Pool | - | 58 | General Monster |
| Cooldown Pool | - | 38 | General Monster |
| Cooldown Pool | - | 38 | General Monster |
| Cooldown Pool | - | 58 | General Monster |
| Cooldown Pool | - | 58 | General Monster |
| Cooldown Pool | - | 58 | General Monster |
| Cooldown Pool | - | 61 | General Monster |
| Cool Down Pond | - | 58 | General Monster |
| Cooking utensils for the competition. | - | 1 | General |
| Cooking Table | - | 1 | Interactive |
| Cooking Station | - | 1 | General |
| Cooking Area | - | 1 | Interactive |
| Continue on your journey. | - | 1 | General |
| Continue on your journey. | - | 1 | General |
| Continue escorting Huey. | - | 1 | General |
| Contaminated sludge | 106 | General Monster | |
| Contaminated sludge | 106 | General Monster | |
| Contaminated sludge | 106 | General Monster | |
| Contaminated Keefodil | - | 1 | General |
| Contaminated Keefodil | 59 | General Monster | |
| Constantine Soldiers | - | 1 | General |
| Constantine Soldiers | - | 1 | General |
| Constantine Soldiers | - | 1 | General |
| Constantine Soldiers | - | 1 | General |
| Constantine Soldiers | - | 1 | General |
| Confused Guard | 73 | General Monster | |
| Confucianism | - | 1 | General |
| Conductive Slimeling | 80 | Elite Monster | |
| Conductive Slimeling | 90 | Elite Monster | |
| Conductive Slimeling | 80 | Elite Monster | |
| Conductive Slimeling | 70 | Elite Monster | |
| Conductive Muckling | 60 | Elite Monster | |
| Conductive Muckling | 70 | Elite Monster | |
| Conductive Muckling | 48 | General Monster | |
| Conductive Muckling | 100 | Elite Monster | |
| Conductive Muckling | 38 | General Monster | |
| Conductive Muckling | 48 | General Monster | |
| Conductive Muckling | 60 | Elite Monster | |
| Conchita | - | 1 | Interactive |
| Concert Stage | - | 1 | General |
| Community Clerk | - | 1 | General |
| Community Chest | - | 1 | General |
| Commission Agent Zemura Itsuki | - | 1 | General |
| Combatant's Sunita | - | 1 | General |
| Combatant's Stone Giant | - | 1 | General |