In the emakimono and e-sugoroku of the Edo Period, such as the Jikkai Sugoroku (十界双六) (held by the National Diet Library), they are written as ぬりぼとけ or ぬり仏, and they are depicted with what appears to be long black hair on their backs.
In the Gyōsai Hyakki Gadan (暁斎百鬼画談) (1889) by Kawanabe Kyōsai, there was a yōkai that was unnamed but had the same appearance as the "nuribotoke" of emakimono, with both eyeballs out the eyesockets.
[7] In the Hyakki Yagyō Emaki (held by the Matsui Library), they are depicted under the name of kurobō (黒坊).
[8][9] According to the Edo Period writing Kiyū Shōran (嬉遊笑覧), it can be seen that one of the yōkai that it notes is depicted in the Bakemono E (化物絵) drawn by Kōhōgen Motonobu is one by the name of "nurihotoke.
[11] Sometimes it will appear as a Buddhist priest and act as a messenger of the Buddha but give out false prophecies to fool worshipers.
According to the caption, this umibōzu appears at the inlet of Shido, Sanuki Province (now Kagawa Prefecture), and it would eat fishers and reduce them to mere bones, but many people devised a plan that allowed them to kill it.