The Fang of Iron (鉄の牙 Tetsu no Kiba) is Anastasia Hoshin's personal Beast Human Mercenary Group.
The Fang of Iron is a mercenary group from Kararagi. They are owned by Anastasia and work for her in various places such as being her bodyguard. Their services can be bought by others, like Subaru, who hired them in his effort to gather an army to fight the Hakugei and Petelgeuse.
- Ricardo Welkin (captain)
- Mimi Pearlbaton (vice captain)
- Hetaro Pearlbaton (vice captain)
- Tivey Pearlbaton (vice captain/treasurer)
- Radian (ラジアン) (mercenary)
- Julius Juukulius (temporarily as Yuri)