Beelzebub

The name "Beelzebub" was one of the earliest words Mary Minett found in her father's dictionary. She thought it to be a beautiful name until she learned that it was derived from the Hebrew phrase "ba 'al zebûb", which meant "Lord of the Flies. (PROSE: Casualties of War)

Behind the scenes
In the 2019 TV series Good Omens (starring David Tennant and Michael Sheen), the character of Beelzebub was played by Anna Maxwell Martin, who appeared in Doctor Who in The Long Game.