- Grant Gustin (Barry Allen / The Flash)
- Candice Patton (Iris West-Allen)
- Danielle Panabaker (Khione)
- Danielle Nicolet (Cecile Horton)
- Kayla Compton (Allegra Garcia)
- Brandon McKnight (Chester P. Runk)
- Jon Cor (Mark Blaine / Chillblaine)
The Flash — S0E51
Episode: Inside the Crossover: Crisis on Earth-X
Air Date: 2018-08-28
Runtime: 40 min
Overview
Executive Producers from Arrow, The Flash, Supergirl and DC's Legends of Tomorrow discuss creating the monumental crossover.