[Sam and Dean], get some personal history for each of them" to allow for "new conflict, new circumstances, new stuff". The brothers' roles were reversed, with Dean now hesitant to return to the hunting lifestyle. The brothers investigated why monsters have been "acting off-pattern". The first few episodes establish the mythology. An episode spoofing Twilight and other vampire series aired in October 2010 and examined the "current romantic fascination" with vampires. However, the Twilight fans at the center of the Winchesters' "disparaging" comments were "slightly fictionalized". On this, Gamble noted, "...part of the thing is finding a balance between [showing] a poster from the actual show and having Sam and Dean really speak their minds. We don't want to offend." A fan of the Twilight series, she also commented, "I'm certainly not coming at this from a place of feeling superior to them. I have great respect." Another episode of the season, "Clap Your Hands if You Believe", consisted of an "insane" storyline featuring Tinker Bell, and the episode began with an alien abduction and a redone title sequence that is a tribute to The X-Files. Misha Collins returned as series regular Castiel, and Jim Beaver returned as Bobby Singer for several episodes. Mitch Pileggi made multiple appearances as Sam and Dean's grandfather Samuel. The recurring role of Christian, the maternal cousin of Sam and Dean, was given to Corin Nemec; he was described as "capable, calm under pressure, and very good at his job". Kim Rhodes returned as Sheriff Jody Mills, as did Fredric Lehne as Azazel. A two-hour season finale aired on May 20, 2011. Reception The review aggregator website Rotten Tomatoes reported a 100% approval rating for Supernatural's sixth season, with an average rating of 7.25/10 based on 7 reviews. Notes References External links Supernatural 06 2010 American television seasons 2011 American television seasons