- Voice Actor (CV)
- Rikiya Koyama
- Gender
- Male
- Age
- 28
- Birthday
- December 31
- Role
- Protagonist
- Identity
- Supreme commander of the clandestine organization Libra, third-born son of the distinguished Reinherz noble lineage
Personality
Gracious Gentleman
Unbreakable Resolve
Cool-Headed Rationalist
Champion of Justice
Beneath Klaus's imposing crimson-haired frame and towering physique lies the soul of a tender-hearted gardening enthusiast. As the head of Libra, he has mastered the ancient art of Brügel Blood Battle Techniques, wielding extraordinary power alongside an indomitable spirit to maintain the fragile balance of the world within the chaotic city of Hellsalem's Lot, all while standing as an unwavering shield for his comrades.