Maria (Ghost Sweeper Mikami)

A female android who is the companion of Dr. Chaos, created from the image of Dr. Chaos's lover in his younger days. She is strong, fast and resistant to damage, hiding all kind of weapons in her body, and is yet a kind-hearted "person" who possesses a soul and the urge to serve mankind. Maria acts as Dr. Chaos' main weapon, bodyguard and housekeeper.