- Cloudian - Eye of the Typhoon
- Cloudian - Ghost Fog
- Cloudian - Nimbusman
- Cloudian - Poison Cloud
- Cloudian - Sheep Cloud
- Clown Zombie
- Coach Captain Bearman
- Coach King Giantrainer
- Coach Soldier Wolfbark
- Cobal, Excavator of Dark World
- Cobraman Sakuzy
- Cockroach Knight
- Cocoon of Evolution
- Cold Sleeper
- Combat Scissor Beetle
- Comics Hero King Arthur
- Command Angel
- Conduction Warrior Linear Magnum ±
- Construction Train Signal Red
- Copy Plant
- Copycat
- Cosmic Compass
- Cosmo Queen
- Cosmos