Beleth (also spelled Bilet, Bileth and Byleth) is a mighty and terrible king of Hell, who has eighty-five legions of demons under his command. He rides a war horse, and all kind of music is heard before him, according to most authors on demonology and the most known grimoires. According to Pseudomonarchia Daemonum Noah's son Ham was the first in invoking him after the flood, and wrote a book on Mathematics with his help.