In which TV series is Dean Winchester a main character?

Who played Temperance Brennan in 'Bones'? In which TV series is Temperance Brennan a main character? Who played Sam Winchester in 'Supernatural'? Who played Dean Winchester in 'Supernatural'? Who played Michael Scofield in 'Prison Break'? In which TV series is Michael Scofield a main character? Who played Charlie Kelly in 'It's Always Sunny in Philadelphia'? Who played Dennis Reynolds in 'It's Always Sunny in Philadelphia'?