This dissertation argues that the modern concept of literary character was an unintended consequence of Renaissance moral poetics. The evolution of "character" as a term of literary analysis, from the rediscovery of Aristotle's Poetics in sixteenth-century Italy to the establishment of modern English usage in the late seventeenth century, is the focus of the first half of my work. Aristotle invented a theory of mimetic realism whereby the representation of types of character renders transparent the moral ideology operative in a culture. By placing types into a plot revealing how they do or do not conduce to human flourishing, the Aristotelian poet engages in ideological critique. As I claim, Renaissance humanists revived the form of the Aristotelian character type yet looked to the ethics of Christian Neo-Platonism or Neo-Stoicism to ground any ideological critique. The result was an array of eclectic accounts of poetic character's relation to the political subject.