Sierra is the tritagonist of Total Drama World Tour. She is the obsessive Total Drama fan, especially Cody. She is in love with him but keeps stalking him, much to his chagrin. She have grandparents are German and single mother who have a crush on Chris McLean. She returned as a secondary character in Total Drama All-Stars. She returned without Cody, much to her sadness. Sierra also appears in the audience in the animated/live-action game show Skatoony in each episode.
- Chris McLean