Sutton Penelope Mercer is a main character. She is the step-daughter of Kristin Mercer and the biological daughter of Ted Mercer, the best friend and cousin of Charlotte Chamberlin, the former best friend of Madeline Rybak, and the half-sister of Laurel Mercer. Sutton also has a twin sister named Emma Becker, that she was separated from at birth. She is the ex girlfriend of Ethan Whitehorse, and fake-dated Luke Coburn, she also slept with Thayer Rybak, and lost her virginity to Ryan Harwell…