Real World Background
Caliban was originally a character in Shakespeare's The Tempest. The son of the witch Sycorax (apparently by a demon), Caliban is described as deformed and monstrous, (though the play does not go into detail about his appearance). He was made a slave by Prospero, especially after he tried to rape Prospero's daughter Miranda; Caliban resented this condition, though he was too much in awe of his master's magic to defy him. When Prospero's storm wrecked King Alonso of Naples' ship upon the island, Caliban encountered two of the king's servants: Trinculo, his court jester, and Stefano, his butler. Awed by them (especially after Stefano gave him wine to drink), he sought their help in overthrowing Prospero; the wizard and his other servant, Ariel, were aware of their scheme, however, and easily defeated the three of them. Caliban afterwards realized what fools Trinculo and Stefano were, vowing to grow in wisdom.
- Caliban at Wikipedia, the Free Encyclopedia