What is stephanos job in the tempest?

In Shakespeare's "The Tempest," Stephano is a drunken butler and a servant to the nobleman Alonso. He becomes a comedic character who, after encountering Caliban, tries to take advantage of the situation by asserting authority over him. Stephano's ambition leads him to believe he can rule the island, highlighting themes of power and folly in the play. His interactions often serve to provide humor and critique the nature of servitude and leadership.