Astaroth

Astaroth illustration from the Dictionnaire Infernal (1818)
Seal of Astaroth, as depicted in The Lesser Key of Solomon

Astaroth (also Ashtaroth, Astarot and Asteroth), in demonology, is known to be the Great Duke of Hell in the first hierarchy with Beelzebub and Lucifer; he is part of the evil trinity. He is known to be a male figure, most likely named after the unrelated Near Eastern goddess Astarte.