Theo Cornaro (テオ・コルネーロ) is the main protagonist of the series. A wandering knight who obtained a Crest from a Chaos Core. He comes from Sistina, a village ravaged by Chaos and oppressed by their Lord, Viscount Phederico Rossini. After rescuing Siluca from soldiers and telling her his goal to free his hometown, he forms a contract with her and together they fight to stop the feuding lords and end the Chaos era.