Mu Wol

The second climber defeated by Hyeonu Kim. After his defeat, Mu Wol was sent to an isolated dimension for his next chance to climb the tower. Sometime after his defeat, Mu Wol meets Hyeonu Kim again. Seeing the latter's persistence, Mu Wol relents and teaches him his Thunder God Techniques. Later, Hyeonu Kim's friend Sihyeon Kim also approaches Mu Wol for training. Mu Wol teaches him Sky Naming Blade- First Stance: Extreme Strike, which can defeat most enemies in one strike.