- Etymology: Broken rule
- Born: 466
- Height: 1.88 m/6'2"
- Weight: 83 kg/182 lbs.
- Eyes: Blue
- Hair: Blonde to base of skull
- Facial Hair: Shaves occasionally, but does not groom
- Tattoos: None
- Scars: Right hip, right bicep, right thigh
- Died: ?
Born to a family of Germanic migrants, Berhtwald lived in a village along Hadrian's Wall. When his village resisted giving tribute to Arthur, the king retaliated by attacking it mercilessly. Berhtwald found himself in a burning building. It was only because of Arthur's heroics that he survived. Since that day he has considered himself permanently in that man's debt.
- The Demon of Lleuenydd