|Wilhelm van Astrea|
|Romaji|| Viruherumu van Asutorea|
Viriherumu Toriasu (former)
|Alias||Sword Demon (剣鬼 Kenki)|
|Age|| 62 (Arc 5+)|
61 (Arc 3-4)
|Hair Color|| White (current)|
|Height||178 cm (5'10")|
|Weight||Upper 60 kg|
|• Professional Status•|
|Affiliation|| Kingdom of Lugnica|
|• Personal Status•|
|Relative(s)|| Thearesia van Astrea (wife)|
Tishua Astrea (mother in law)
Bertol Astrea (father in law)
Heinkel Astrea (son)
Louanna Astrea (daughter in law)
Reinhard van Astrea (grandson)
|• Abilities and Equipment•|
|Light Novel||Volume 4|
|Manga|| Chapter 1 (flashback)|
Chapter 10 (actual)
|Japanese Voice|| Horiuchi Kenyuu|
Ishikawa Kaito (young)
Wilhelm has white hair and blue eyes. He wears a white shirt, white vest, black bowtie, black dress pants, and a black and blue coat. Due to his daily training, he is still muscular at his old age, and his back perfectly straight.
When he was young, Wilhelm had brown hair, and wore the Royal Guard uniform.
Wilhelm is usually kind but will become angry if needed. Normally having a soft demeanor, he will be the first to help when something happens, a trait that he has had ever since he was young.
Master Swordsman: Through years of training and effort, Wilhelm honed his swordsmanship skills to the point where he was able to defeat the previous Sword Saint in a duel. He was also considered to be a threat to the Demi Humans during the Demi Human War, and his menacing appearance earned him the alias of Sword Demon (剣鬼 Kenki).
- According to the author, Wilhelm's birthday is May 7.
- Wilhelm looks similar to Valkenhayn R. Hellsing from BlazBlue.