| Name | KR Name | Group | Description |
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| Corsair Costume | 커세어 코스튬 | Armor | This costume consists of several layers of independent clothes. It demonstrates the wisdom of the seafarers. |
| Corsesca | 코르세스카 | Weapon | If one feels that his weapon deals additional damages on the demons, that's just a feeling. |
| Corylus Core | 코릴러스의 핵 | Quest | A material requested by the Linker Submaster for testing purposes. What could she be planning to do with it? |
| Corylus Gem | 코릴러스의 젬 | | A gem that can be found in a dungeon. It is able to enhance equipment by equipping it in a socket. Cannot be used with same effect simultaneously. Right-click to insert it to an equipment. |
| Corylus Horn | 코릴러스의 뿔 | Material | The main horn has smaller horns around it.
Obtained from Coryluses. |
| Corylus' Soul | 코릴러스의 영혼 | Quest | A demon's soul collected in order to identify demon monsters. |
| Costume Special Costume | 엑소시스트 스페셜 코스튬 | Armor | Exorciser is a term describing a beginner Exorcist. It used to refer to a shaman before the establishment of the Kingdom and now it is embroidered on the garments of the Exorcists. |
| Cotton Boots | 코튼 부츠 | Armor | Worn and enjoyed by spell casters. |
| Cotton Gloves | 코튼 글로브 | Armor | Worn and enjoyed by spell casters. |
| Cotton Pants | 코튼 팬츠 | Armor | They are believed to provide exceptional magic defense. |
| Cotton Robe | 코튼 로브 | Armor | People still choose this robe for its magic defense. |
| Cough Medicine | 기침약 | Quest | A tasty candy ball made for the workers at the petrifed city in Kaliss |
| Counterfeit Goods | 위조품 | Quest | Counterfeit goods passed to you from Kevin. They're not finished. |
| Cow Headband | 젖소 머리띠 | Armor | Moooo mooooo mooo moo moooo. |
| Crabil Card | 크래빌 카드 | Card | [Card Equip Effect] Stun Resistance +[{img star_mark 20 20}*2]% |
| Cracked Orb of Return | 부서져 가는 환원의 보주 | Quest | The Orb of Return carried by Priest Irma. It's about to shatter due to being used on Marnox so many times. |
| Crafted Coral | 세공된 산호 | Quest | A coral handcrafted by Accessory Merchant Joana. One may as well call it an actual jewel. |
| Cranequin | 크래인퀸 | Weapon | The mechanism assists beginners in using it, but experienced users will benefit from the extra power. |
| Craute Grass Juice | 크라우트 풀즙 | Quest | A liquid extract obtained from Craute grass. Monsters like it. |
| Creepy Wood Bark | 기분나쁜 나무껍질 | Quest | Creepy, disturbing wood bark that has been altered from its original shape. It is presumed to have changed due to influence of the demons. |
| Crescent Amulet | 크레센트 어뮬렛 | MagicAmulet | [Effect][In development] |
| Creto Feather | 크레토의 깃털 | Material | Material obtained from monsters.
Used for crafting. |
| Crimson Contact Lenses | 크림슨 렌즈 | Armor | Colored contact lenses can alter the color of your eyes. |
| Crimson Leather Armor | 크림슨 레더 아머 | Armor | This magical armor will extend your maximum HP. |
| Cripple | 크리플 | Weapon | Anyone hit by this spear will suddenly be limping. |