SAN DIEGO, CA - JULY 22: David Harewood and Katie McGrath attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Actors Melissa Benoist (L) and David Harewood attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Actor Melissa Benoist walks onstage at the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Melissa Benoist, David Harewood, and Katie McGrath attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Melissa Benoist, David Harewood, and Katie McGrath attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Jeremy Jordan attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Jeremy Jordan attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Odette Annable attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Chris Wood attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Chris Wood attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Chris Wood (L) and Odette Annable attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: KAtie McGrath (L) and Robert L. Rovner attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: (L-R) Jeremy Jordan, Melissa Benoist, David Harewood, Katie McGrath, Robert L. Rovner and Jessica Queller attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Katie McGrath attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Melissa Benoist attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Katie McGrath attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Odette Annable, Mehcad Brooks, and Jeremy Jordan attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Mehcad Brooks (L) and Jeremy Jordan attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Jeremy Jordan, Melissa Benoist, and David Harewood attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Jeremy Jordan (L) and Melissa Benoist attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Jeremy Jordan, Melissa Benoist, and David Harewood attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Chris Wood, Odette Annable, and Mehcad Brooks attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Moderator Leanne Aguilera attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Fans in Supergirl costumes attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Producer/writer Robert L. Rovner and writer Jessica Queller attend the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)
Comic-Con International 2017 - "Supergirl" Special Video Presentation
SAN DIEGO, CA - JULY 22: Actor Melissa Benoist attends the "Supergirl" special video presentation during Comic-Con International 2017 at San Diego Convention Center on July 22, 2017 in San Diego, California. (Photo by Mike Coppola/Getty Images)