User blog comment:TheDipDap1234/Analyzing the so called "floaters" of every season./@comment-27480805-20160801011314/@comment-5231983-20160804041101

Yeah, Heather and Alejandro weren't comical but their story was too cruicial to the overall plot of Total Drama to change. Plus, Sierra and Cody, who are in every episode, serve well as comic relief.