Laren Mapstone is the current captain of the Green Riders. Her brooch grants her the ability to sense whether a person is telling the truth. She has red hair that appears like new copper in the sunlight and burnished auburn indoors. Her hair is streaked with gray. She has hazel eyes, faded freckles, and a hawklike nose. She has a scar running from her chin and neck to under her clothing. Her horse's name is Bluebird. She takes part in the fight at the end of the book she is also mentioned in a book at a rider shack.