Special Guest Stars Grant Gustin as Barry Allen Carlos Valdés as Cisco Ramon Danielle Panabaker as Caitlin Snow Guest Stars Audrey Marie Anderson as Lyla Michaels Cynthia Addai Robinson as Amanda Waller Nick Tarabay as Digger Harkness Co Starring Marcus Sim as Li Khuan Hui Adam Lolacher as Klaus Markos Vincent Tong as Katsu Cheng Dan Rizzuto as A.R.G.U.S. Guard Tommy Campbell as Lead Gunman Rick Faraci as Biker Leader