"Total Sibling Rivalry" is an ongoing fanfiction for Total Drama Island, written by Kelsica2. "Total Sibling Rivalry" takes place about a year after Total Drama Island. Twelve of the contestants, as well as sixteen of their original character siblings, return for a chance to win $500,000. The contestants are divided into two teams: the Killer Bears and the Rabid Wolves. And later, the Fighting Ferrets and the Raving Ravens. There's a challenge each weekday, but the contestants get a bit of a rest on the weekends, as well as getting to check up on the losers. Arguably, the two main characters are Marilee, Geoff's 14-year-old sister, who's bossy, intelligent, and has an eternal love for shoes, and Selena, Duncan's 13-year-old sister, who's punkish, impulsive, and very much a Dumb Blonde.