Directed by Jesse Warn   Written by Jerry Siegel   Joe Shuster   Greg Berlanti   Ali Adler   Andrew Kreisberg   Derek Simon   Robert L. Rovner   Marc Guggenheim   Eric Carrasco   Daniel Beaty   Aadrita Mukerji   Katie Rose Rogers   Jessica Kardos   Cast Melissa Benoist ... Kara Danvers / Supergirl Mehcad Brooks ... James Olsen Chyler Leigh ... Alex Danvers Katie McGrath ... Lena Luthor (credit only) Jesse Rath ... Querl Dox / Brainiac-5 Sam Witwer ... Agent Liberty (credit only) Nicole Maines ... Nia Nal (credit only) April Parker Jones ... Colonel Lauren Haley (credit only) David Harewood ... J'onn J'onzz / Martian Manhunter Stephen Amell ... Oliver Queen / Green Arrow David Ramsey ... John Diggle Carlos Valdes ... Cisco Ramon Danielle Panabaker ... Caitlin Snow Tyler Hoechlin ... Clark Kent / Superman Grant Gustin ... Barry Allen / The Flash Jeremy Davies ... Dr. John Deegan Ruby Rose ... Kate Kane / Batwoman LaMonica Garrett ... The Monitor Cassandra Jean Amell ... Nora Fries Adam Tsekhman ... Bartender Bob Frazer ... Roger Hayden / Psycho-Pirate Elizabeth Tulloch ... Lois Lane Claudia Kai ... Young Woman (as Claudia Yuen) Uncredited Cast Shawn Clark ... Daggers John Wesley Shipp ... Barry Allen / The Flash (Earth 90) (archive footage) Produced by Greg Berlanti   Marc Guggenheim   Saray D. Guidetti   Dana Horgan   John LaBrucherie   Jennifer Lence   Gabriel Llanas   Maria Maggenti   Carl Ogawa   Chris Pavoni   Jessica Queller   Robert L. Rovner   Sarah Schechter   Derek Simon   Jesse Warn   Joanie L. Woehler   Rob Wright   Original Music by Nathaniel Blume   Daniel James Chan   Sherri Chung   Blake Neely

Additional Info Premiere: December 11, 2018 DVD Release: September 17, 2019 Blu-ray Release: September 17, 2019 Country: Distributor: Warner Brother Studios Websites: Production Companies Berlanti Productions Warner Bros. Television Distributors CBS   (2015-2016) (USA) (TV) (season 1) The CW Network (The CW)   (2016-) (USA) (TV) (season 2-) HBO Max   (2020) (USA) (video) (VOD) Studio Distribution Services (SDS)   (2021-2022) (USA) (Blu-ray) (through) Studio Distribution Services (SDS)   (2021-2022) (USA) (DVD) (through) Warner Bros. Home Entertainment   (2017-2022) (USA) (Blu-ray) Warner Bros. Home Entertainment   (2017-2022) (USA) (DVD) Warner Home Video   (2016-2022) (USA) (Blu-ray) Warner Home Video   (2016-2022) (USA) (DVD) Rating Stats Overall Rating -- / 10 Our Rating -- / 10 Your Friends -- / 10 Male Users -- / 10 Female Users -- / 10 Site Ranking #1,397 / 21,074 Site Ranking