Inai-san

Inai is the invisible maid, her name literally means "not here".

Appearance
Inai is usually shown as a shadow, or a floating bowl of food. When she does appear, she has long black hair and her uniform is camo green. Most art of her when she is visible shows her with weapons, or guns, due to her outfit.

Personality
Inai is one of the more rare maids, and has no official personality apart from being invisible. Her only trait may possibly be an interest in the military.