Nuribotoke / 塗仏 (an animated corpse with blackened flesh and dangling eyeballs) from the Hyakkai-Zukan, ca. 1737 by Sawaki Suushi. They are portrayed as similar in appearance to the Buddha but with largely bloated stomachs and occasionally having a catfish's tail.
hunchbackrainbow by Public Domain Review, via Flickr selection of wonderful little illustrations found in a Book of Hours attributed to an artist of the Ghent-Bruges school and dating from the late 15th century. In the pages without full borders the margins have been decorated with an array of different images depicting flowers, birds, jewellery, animals, household utensils and these superb rainbow-coloured ‘grotesques’