The Tempest 10/16

The behavior of the brothers Antonio and Sebastian is mirrored by the comic subplot of the  butler Stephano, the jester Trinculo, and Caliban, who enlists their aid to help him kill Prospero. As it is true in other plays by Shakespeare, these characters also serve as foils to the protagonists.  Note ways in which the comical subplot mirrors darker, more serious events in the play as a whole.  Do they get what they deserve?  Is Caliban’s punishment at the end of the play fitting?