 The character Kenny is absent during the majority of the season, which allowed the show's creators and writing staff an opportunity to provide larger roles for both Tweek and Butters, who were growing more popular with both the viewers and staff of the show.Kenny ultimately returns in the season finale "Red Sleigh Down", and, though Butters has continued as a significant presence as the "de facto" fifth main character, Tweek had very few lines until "".It is in the season 19 episode "Tweek x Craig" that he is forced into a relationship with Craig Tucker, seemingly just to appease the townspeople; however in later productions, such as the season 21 episode "Put It Down" and "", they are shown through their continuous treatment of each other as romantic partners even in private settings to be a real couple.