Obaba appeared to be an elderly woman of advanced age. Missing several teeth and her right eye, she is an unusual figure, wearing a hat with several tin cans attached to it, and more than one bird appears to be living on her. Her hat and long hair have several coins, horse shoes and rabbits' feet braided into them, presumably for good luck.
Obaba is an eccentric figure, revelling in her missing eye as it apparently makes her look like a pirate. She is considered a weirdo by her fellow, Oku, but despite this, she seems knowledgable on the history of Rinka, and the various names and myths surrounding them, showing that she still retains some of her exorcist expertise.
Whilst travelling in the past, Rin Okumura observes the life of his mother, Yuri, before she joined the True Cross Order. He watches Yuri live and play in the junkyard before a tragic fire kills Obaba, Oku and Niko, forcing Yuri into the streets alone.