Stephano (/ˈstɛfənoʊ/ STEF-ən-oh) is a boisterous and often drunk butler of King Alonso in William Shakespeare's play, The Tempest. He, Trinculo and Caliban plot against Prospero, the ruler of the island on which the play is set and the former Duke of Milan in Shakespeare's fictional universe. In the play, he wants to take over the island and marry Prospero's daughter, Miranda. Caliban believes Stephano to be a god because he gave him wine to drink which Caliban believes healed him.