Behemoth, the Devil.

This woodblock of the demon Behemoth, a "heavy, stupid demon, despite his dignities ... his powers are in the gluttony and the pleasure of the belly", is found in J.A.S. Collin de Plancy's Dictionnaire Infernal published in 1863.

We've featured images from the Cornell University Library's Division of Rare and Manuscript Collections before, but it's worth another look: Link - Thanks Yayo!