Isabelle du Monceau de Bergendal
Du monceau



Date of Birth:

December 10th, 1928


Britannian Air Force
506th Joint Fighter Wing


Pilot Officer



Striker Unit model:

Ultramarine Spitfire


Boys Anti-Armor Rifle


Bouvier des Flandres

Isabelle du Monceau de Bergendal (イザベル・デュ・モンソオ・ド・バーガンデール?) is a Witch of the 506th Joint Fighter Wing.

Isabelle is a small aristocrat from Belgica, when the country fell she and her family emigrated to Britannia. She is based on Yvan Georges Arsène Félicien du Monceau de Bergendal.


Her reckless parents wanted to protect their only heir, so they raised her as a boy named Isaac. Because they thought that if she was discovered to be a witch she would be considered to be the country's property. Due to her having masculine hobbies such as hunting, she became an excellent shot.

When Belgica fell, she retreated with other witches to Britannia, where they reorganized a unit to support the Britannian Air Force and continued fighting. When the 506th Joint Fighter Wing was formed and it had two members announced, one from Karlsland and one from Romagna, the panicking Britannian army sent her there. This was done mostly because she already knew some Gallian areas, as she also had blood from noble families from Gallia and Baltland.


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