I, Robot Character Roles
Protagonist
Susan Calvin, Stephen Byerley, Gloria Weston, Gregory Powell, and Michael Donovan
Antagonist
Francis Quinn, Nestor-10, Herbie, Peter Bogert, Major-General Kallner, the planet Mercury, Mrs. Weston, Cutie, the Society for Humanity, Consolidated
Guide Mentor
None
Foil
Calvin and Powell and Donovan
Romantic
Milton Ashe