Buer is a spirit that appears in the 16th-century grimoire Pseudomonarchia Daemonum and its derivatives, where he is described as a Great President of Hell, having fifty legions of demons under his command.
Like Chiron, the chief centaur of Greek mythology, he teaches natural and moral philosophy, logic, and the qualities and uses of all herbs and plants, and is also capable of healing all infirmities (especially of humans) and bestows good familiars.
Additionally, Louis Le Breton created an illustration of Buer, later engraved by M. Jarrault, depicting the demon as having the head of a lion and five, six or more goat or horse legs surrounding his body to walk in every direction.
Buer is portrayed as a high school teacher in the anime and manga series Welcome to Demon School!
Buer is the name of the Dendro Archon in 2020 video game Genshin Impact, who appears as Nahida.