O. M. Glee. Glee will be without one of its original cast members when it returns for its sixth and final season: Chris Colfer. Shocking fans of the Fox series, Colfer tweeted on Thursday, “Due to personal issues, I have been let go from the cast of GLEE. Explanations will come shortly.” Colfer played fan favorite Kurt for the first five seasons and was one-half of Glee’s most popular couple, along with Darren Criss’ Blaine. Glee’s final season will air midseason on Fox.