Datsue-Ba (ダツエバ, Datsueba)? is a demon in the series.
A Japanese demoness who looks like a hag. She robs the clothes of the dead before they cross the Sanzu River to Yomi, the netherland. The sin of the deaths is determined by the weight of their clothes, much like the role of Anubis in Egyptian myth.
"A monster appearing in Japanese legends. She appears as an old woman with a piercing gaze that makes even the innocent tremble. In Japanese folklore, when people die, they must cross the Sanzu River to reach the afterlife. Datsue-Ba sits on the edge of this river and tears off the clothes of the dead as they arrive. She then hangs them on a tree to measure the weight of their sins. How far the tree bends determines where they are allowed to cross the river. She is sometimes described as the wife of Yama, king of the dead."
—Shin Megami Tensei IMAGINE Compendium
Datsue-Ba can be contracted during the day in Ueno and in most cars of the Old Tokyo Metro instance. She appears alongside Kikuri-Hime when she acts as a boss in Old Ichigaya Camp's bronze-level instance.