| Engage in battle, Sensei Rock!!!!
| — In Japanese
Nightmare Warrior is Sensei Rock's greatest, strongest, toughest rival yet. There were enemies since their childhood. In Party Ninja#4: Party Ninja send him to the sun. His status is unknown.
- In the Japanese version, he is the only one that curse.
- He resembles Meta Knight since they don´t want to reveal their identity and would run away cowardly.