Prospero's unwilling slave. As the son of the witch Sycorax, who ruled the island before she died years prior to Prospero's arrival, Caliban believes that he should be master of the island. When Prospero initially came to the island, Caliban showed him friendship, and in return Prospero educated Caliban. But Caliban eventually came to realize that Prospero would never view him as more than an educated savage. Though capable of sensitivity and eloquence, Caliban is furious and bitter and wants nothing more than to rid himself of Prospero. Caliban's name is a near anagram for the world "cannibal," and in many ways he is a symbol of the natives that European explorers encountered. Through Caliban, and his relationship to Prospero, Shakespeare explores the themes of colonization and the relationship between the colonizer and the colonized.