Arie has pitch black skin and red eyes with black pupils. She has short light brown hair with straight cut bangs, with ram horns protruding from the sides. She wears a turtleneck maid uniform with a white apron, white bloomers, white stockings and black Mary Janes.
Not much is known about her.
Not much is known about her past.
Sinow seems to be one of Arie's friends.
- Her name could be a play on the word "Aries", which is the astrological sign for April, as well as "Aries" literally translating to "Ram" or "Sheep".