Returning recurring characters that appear in the episode include McKinley High's ex-principal
Figgins (
Iqbal Theba), former bully
Dave Karofsky (
Max Adler), the Superintendent Bob Harris (
Christopher Cousins), the showrunner of Rachel's series Lee Paulblatt (
Jim Rash), and one of Rachel's dads LeRoy Berry (
Brian Stokes Mitchell). Three new recurring characters were introduced: the new lead singer of Vocal Adrenaline, Clint (
Max George), new student
Roderick (Noah Guthrie), and
Spencer Porter (Marshall Williams), a gay
jock who plays football. Effective with this episode, former recurring guest star
Dot-Marie Jones as
Shannon Beiste joins the main cast after four years of being a guest star. Actress and singer
Amber Riley, who plays
Mercedes Jones, returns to the main cast in this episode, although she is absent.
Melissa Benoist,
Alex Newell,
Blake Jenner,
Becca Tobin,
Jacob Artist,
Naya Rivera, and
Jenna Ushkowitz (Marley Rose, Wade "Unique" Adams, Ryder Lynn, Kitty Wilde, Jake Puckerman, Santana Lopez, and Tina Cohen-Chang respectively) were demoted to recurring guest stars. However, Melissa Benoist does not return for the final season, although she was invited. The episode features five musical cover versions. Two of them are performed by Michele as Rachel Berry, which are "
Uninvited" by
Alanis Morissette and "
Let It Go" by
Idina Menzel from
Frozen. Michele and Criss perform "Suddenly Seymour" from
Little Shop of Horrors, while Criss and the Dalton Academy Warblers perform
Ed Sheeran's "
Sing". Max George sings "
Dance the Night Away" by
Van Halen with Vocal Adrenaline. Accompanying the music from this episode, the
EP Glee: The Music, Loser Like Me was released on January 5, 2015. Michele later disclosed on
Jimmy Kimmel Live! that while filming her cover of "Let It Go" for this episode, a production error caused her to accidentally vomit on set. ==Reception==