Stars (in credits order)
Dianna Agron
Quinn Fabray (archiveFootage)
Kristin Chenoweth
April Rhodes (archiveFootage)
Chris Colfer
Kurt Hummel (archiveFootage)
Brad Ellis
Brad the Piano Player (archiveFootage)
Eve
Grace Hitchens (archiveFootage)
Jessalyn Gilsig
Terri Schuester (archiveFootage)
Josh Groban
Self (archiveFootage)
Jonathan Groff
Jesse St. James (archiveFootage)
Michael Hitchcock
Dalton Rumba (archiveFootage)
Bill A. Jones
Rod Remington (archiveFootage)
Jane Lynch
Sue Sylvester (archiveFootage)
Jayma Mays
Emma Pillsbury (archiveFootage)
Kevin McHale
Artie Abrams (archiveFootage)
Lea Michele
Rachel Berry (archiveFootage)
Cory Monteith
Finn Hudson (archiveFootage)
Heather Elizabeth Morris
Brittany S. Pierce (archiveFootage)
Matthew Morrison
Will Schuester (archiveFootage)
Olivia Newton-John
Mike O'Malley
Burt Hummel (archiveFootage)
Amber Riley
Mercedes Jones (archiveFootage)
Naya Rivera
Santana Lopez (archiveFootage)
Romy Rosemont
Carole Hudson (archiveFootage)
Charlotte Ross
Judy Fabray (archiveFootage)
Mark Salling
Puck (archiveFootage)
Harry Shum Jr.
Mike Chang (archiveFootage)
Dijon Talton
Matt Rutherford (archiveFootage)
Stephen Tobolowsky
Sandy Ryerson (archiveFootage)
Jenna Ushkowitz
Tina Cohen-Chang (archiveFootage)
Michael Benjamin Washington
Tracy Pendergrass (archiveFootage)
Mike Downey
Parent (uncredited) (archiveFootage) (unconfirmed)