Elseworlds


 * For the eponymous multiversal phenomenon, see Elseworlds (concept)

Elseworlds is the name of the fifth annual shared multiverse crossover event between ​​​​, ​​​​, and ​​​​. The crossover aired over three nights from December 9th to December 11th, 2018. This crossover serves as a set-up for the upcoming television series ​​​​ and officially confirms ​​​​ to be canon for the Arrowverse.

Synopsis
The three-night event begins with Arkham Asylum doctor John Deegan rewriting reality, which results in Oliver and Barry swapping lives. In this new reality, the two heroes are the only ones that know that they are in the wrong lives and have each other's powers.

Cast

 * John Wesley Shipp as The Flash
 * LaMonica Garrett as Mar Novu/The Monitor
 * Jeremy Davies as Dr. John Deegan
 * Stephen Amell as Oliver Queen/Green Arrow/The Flash
 * Candice Patton as Iris West
 * Carlos Valdes as Cisco Ramon/Vibe
 * Danielle Panabaker as Dr. Caitlin Snow/Killer Frost
 * Hartley Sawyer as Ralph Dibny/Elongated Man
 * Grant Gustin as Barry Allen/The Flash/Green Arrow
 * David Ramsey as John Diggle
 * Tom Cavanagh as Harrison Sherloque Wells and Professor Eobard Thawne/Reverse-Flash
 * Tyler Hoechlin as Clark Kent/Superman and Superman (John Deegan)
 * Elizabeth Tulloch as Lois Lane
 * Melissa Benoist as Kara Danvers/Supergirl
 * Echo Kellum as Curtis Holt
 * Liam Hall as Joe Wilson/Kane Wolfman
 * Emily Bett Rickards as Felicity Smoak
 * Ruby Rose as Kate Kane/Batwoman
 * Bob Frazer as Roger Hayden
 * Cassandra Jean Amell as Nora Fries
 * John Barrowman as Malcolm Merlyn/Dark Archer
 * Kirk Acevedo as Ricardo Diaz
 * Chyler Leigh as Alex Danvers
 * Adam Tsekhman as Gary Green
 * Mehcad Brooks as Jimmy
 * Jesse Rath as Querl Dox/Brainiac 5
 * David Harewood as J'onn J'onzz/Martian Manhunter

Trivia

 * The title of this crossover, Elseworlds, is a reference to a publication imprint produced by DC Comics for stories that took place outside of the DC Universe canon.
 * Kate Kane/Batwoman made her debut in this crossover. Her own series, ​​​​, is currently in development.
 * Like ​​​​, Elseworlds received its own special opening title card.
 * Like ​​​​, the first two parts of Elseworlds ended with a "To be continued on" card.
 * This crossover focused on five core characters. Those characters were Oliver Queen/Green Arrow, Barry Allen/The Flash, Kara Danvers/Supergirl, Clark Kent/Superman and Kate Kane/Batwoman.
 * This crossover introduced Lois Lane as well as the Earth-1 doppelgängers of Alex Danvers (Earth-1 Alex Danvers) and James Olsen (Jimmy).
 * This is the first crossover since ​​​​ to not include ​​​​.
 * However, Gary Green does appear in "​. Also, "​​ refers to the crossover subtly.
 * This is the first crossover since ​​​​ where no antagonists are dead by the end.
 * This is the first crossover where doesn't appear in every episode as she only appeared in "​.
 * This was the first crossover to feature Ralph Dibny/Elongated Man, Clark Kent/Superman, Joe Wilson, Ricardo Diaz, and Querl Dox/Brainiac 5.
 * This crossover marks the first time when the title of the next crossover (​​​​) is revealed at the end.
 * This crossover had the most absent series regulars as there were 13 series regulars who were absent. The series regulars who did not appear in the crossover were:
 * ​​​​ - Danielle Nicolet (Cecille Horton), Jessica Parker Kennedy (Nora West-Allen), Chris Klein (Orlin Dwyer), and Jesse L. Martin (Joe West).
 * ​​​​ - Rick Gonzalez (Rene Ramirez), Juliana Harkavy (Dinah Drake), Colton Haynes (Roy Harper), Sea Shimooka (Emiko Queen), and Katie Cassidy (Earth-2 Laurel Lance).
 * ​​​​ - Katie McGrath (Lena Luthor), Sam Witwer (Ben Lockwood), Nicole Maines (Nia Nal), and April Parker Jones (Lauren Haley).