Watch all three promos below!
Updated: with new poster below.
"Crisis on Earth-X" kicks off Monday November 27th on Supergirl at 8pm ET, followed by a special Monday night episode of Arrow at 9pm ET and concludes on Tuesday November 28th with The Flash at 8pm ET followed by DC's Legends of Tomorrow at 9pm ET.
Barry (guest star Grant Gustin) and Iris’s (guest star Candice Patton) wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. All of the superheroes band together with help from their super friends like Citizen Cold (guest star Wentworth Miller), The Ray (guest star Russell Tovey), Felicity Smoak (guest star Emily Bett Rickards), Iris West and Alex Danvers (Chyler Leigh) to take on their most formidable villains yet. Earth’s mightiest heroes – Green Arrow (guest star Stephen Amell), Supergirl (Melissa Benoist), The Flash (guest star Grant Gustin) and White Canary (guest star Caity Lotz) – lead their teams into battle to save the world.