Matenshi

The name Matenshi (魔天使) is unofficial and is was taken from the Japanese fanbase, who notably uses the name to refer to this character. The "Ma" (魔) can mean "evil", "magic" or "devil", while "tenshi" (天使) means "angel", both referencing her appearance. It is not to be confused with Tenshi Hinanawi. It may also be referred to as the "SoEW 4th Stage Midboss" (封魔録四面中ボス) and "Mokutou" by Westerners. Her sprite shows that she has purple hair at medium length and wears a long blue dress. She has an apron with a cross on it, and also has white wings. Since she's got angel-like wings and a holy attire, she's possibly an Angel. However, Reimaden might be in Makai, which can therefore indicate that she's a demon with the fact that Gengetsu also has angel wings. Also, her design somewhat resembles Sariel's.