Larson Coleman is a character that appears in Twelve, Thirteen, and Thirteen Plus One.
When Lars (Larson) first appears in Twelve, all he says is "Hey Win." Winnie replies by saying "Hey Lars." (Win and Lars are the nicknames they made for each other.) He is depicted to have hazel eyes, tan skin, and tousled brown hair. He and Winnie have had a rocky relationship. His best friend Bryce dated Cinnamon (one of Winnie's besties) but broke up with her via Facebook.