Testa Lielbelle

Testa Lielbelle is a brilliant 17 year old boy who has learned every language from the countries involved in World War Two. He has become a university professor who excels cryptanalysis. When he was in boarding school, he was bullied due to his high-inteligence, and he is a civilian.

He is depicted as someone who genuinely cares for both sides, and shows this by protecting Yonaga. Eventually she warms up to him and tells him her name.

(Spoilers from this point on)

Later, during the fight with Lance Corporal Balke, Yonaga uses her blood to turn him into a were-wolf. This grants him the power needed to save Alex Rossa, whom he follows and obeys out a feeling of debt, and kill Lance Corporal Balke. Realizing he can't show his face anymore, he goes off with Yonaga, leaving Alex for the time being.

In the ONA, he is voiced by Keaki Watanabe