Boris Feulner (ボリス・フォイルナー Borisu Foirunā?) is a member of the Military Police stationed in Stohess District.

Boris came to Annie's defense when she got late to her duty, telling others to give her a rest. He stated that being the only one to experience the actual combat (Defense of Trost district) among her squad, Annie must be still suffering trauma from it.

When Marlo tells his colleagues of his ambition to reform the Military Police, Boris tells Marlo good luck, albeit with nonchalance.