Special Guest Stars Grant Gustin as Barry Allen Carlos Valdés as Cisco Ramon Danielle Panabaker as Caitlin Snow Ciara Renée as Kendra Saunders / Hawkgirl Guest Stars Anna Hopkins as Samantha Clayton Casper Crump as Vandal Savage Falk Hentschel as Carter Hall / Hawkman Peter Francis James as Dr. Aldus Boardman Co Starring Jack Moore as William Clayton Michael Tiernan as Ramesses II
