- Dianna Agron(archive footage)
- Kristin Chenoweth(archive footage)
- Chris Colfer(archive footage)
- Brad Ellis(archive footage)
- Eve(archive footage)
- Jessalyn Gilsig(archive footage)
- Josh Groban(archive footage)
- Jonathan Groff(archive footage)
- Michael Hitchcock(archive footage)
- Bill A. Jones(archive footage)
- Jane Lynch(archive footage)
- Jayma Mays(archive footage)
- Kevin McHale(archive footage)
- Lea Michele(archive footage)
- Cory Monteith(archive footage)
- Heather Elizabeth Morris(archive footage) (as Heather Morris)
- Matthew Morrison(archive footage)
- Olivia Newton-John(archive footage)
- Mike O'Malley(archive footage)
- Amber Riley(archive footage)
- Naya Rivera(archive footage)
- Romy Rosemont(archive footage)
- Charlotte Ross(archive footage)
- Mark Salling(archive footage)
- Harry Shum Jr.(archive footage)
- Dijon Talton(archive footage)
- Stephen Tobolowsky(archive footage)
- Jenna Ushkowitz(archive footage)
- Mike Downey(archive footage) (unconfirmed) (uncredited)
- Vicki Sousatransportation
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