Eu pesquisei muito, mas não encontrei nenhuma referência de Pazuzu sendo mencionado como um anjo caído na Bíblia. Sim, Pazuzu pode estar no Antigo Testamento (com a Bíblia sendo inspirada nas religiões pagãs), mas sem que o nome dele seja mencionado diretamente.
De acordo com a Ancient.au
Pazuzu is believed to have gone through at least two major
mythological changes. Aside from being a bird and a demon-god, though,
it's also possible that he made an appearance in the biblical Old
Testament. King Solomon faced a wind demon while attempting to build
the Temple Of Jerusalem. After capturing this pesky spirit, Solomon
learns that its name is Ephippas.
According to the Old Testament, Ephippas damaged the land and killed
people daily with his fierce winds. This has some similarities to the
legend of Pazuzu, a demon that controlled the wind and could cause
massive amounts of death and devastation.