Heather is the popular snob in the Screaming Gophers. Heather enjoys talking about her popularity, or her appearance, but truly dislikes her evil little brother Damien. Heather joined Total Drama Island because she believed that it would provide great training for carrying out her long term goal of ruling Europe. In middle school, she was brace-faced, fat, ugly, and above all a middle school reject. She intends to win the competition with dirty tricks, cheating, and sabotaging the other campers. She first forms an alliance with Beth and Lindsay to get to the final three, using Lindsay for stupidity and Beth for her desire to be popular. She first bribes everyone on her team to vote Justin off instead of her. She has an extreme distaste for Gwen and Leshawna, which begins in "Not Quite Famous" after she reads out Gwen's diary, revealing Gwen's crush on Trent. In "X-Treme Torture", she becomes embarrassed after driving a seadoo and while attempting to cut the rope Harold was holding onto, a tree branch snagged her top and Heather remained completely topless. Harold started making a big deal out of it. In the next episode she tries to get Bridgette to join her alliance, but Bridgette says no. An the next episode, Duncan reveals he thinks Heather did something to eliminate Courtney. Eventually Heather gets Izzy to join the alliance with herself and Lindsay. She then spots Gwen and Trent making out. She forms a plan to get one of them voted out, so she gets Trent to turn on Gwen by telling him that Gwen is using him. She makes out with Trent angering Gwen. In the end, Heather won invincibility and the group voted out Trent, meaning her plan worked. Heather betrayed Lindsay in "That's Off The Chain!" Although she does make it to the finale three with Gwen and Owen, she refuses to complete the challenge and is eliminated because of Lindsay's dare to have her head shaved. In "If You Can't Take The Heat...", Heather threatened that she would cut off Lindsay's hair while she was sleeping if she betrayed her again like what happened to Beth. This threat however would come back to haunt Heather later in the game.
Besides interfering with Gwen and Trent, she has also interfered in many other relationships, including Lindsay and Tyler, Harold and Leshawna, and Duncan thought that Heather had something to do with his crush, Courtney. Overall, heather is kind of an antagonist (sort of).