Rapdevil

Rapdevil is a Regular nicknamed "Devil of the Right Arm" because of his ability to transform his right arm into a black and blue striped 'Power mode'. He had been hired to travel with a rich company owner's son. He claimed to have defeated Hatz, who apparently is a well-known swordsman and Regular in the Tower.

However, it is later revealed that he is in fact only a fake, using the reputation of Beniamino Cassano, the real Devil of the Right Arm.