There's just a few weeks left until the annual Arrowverse crossover, which is entitled Crisis on Earth-X and will be condensed into two nights of programming on Monday, November 27 and Tuesday, November 28. Each night, there will be a two-hour movie airing in each two-hour block, representing the episodes of Supergirl, The Flash, Arrow and DC's Legends of Tomorrow, with the entire Arrowverse coming together for something much more positive than their usual meetings, the wedding of Barry Allen (Grant Gustin) and Iris West (Candice Patton). However, they soon learn that this happy occasion will be marred by the threat of a new group of villains.

Fans got their first look at the DCTV take on Earth-X in the sneak peek of the Freedom Fighters: The Ray digital animated series that was released this summer, and it looks like the Ray will make his live action debut in the crossover. Also of note, the crossover looks like it'll bring the long-awaited nuptials of Barry Allen and Iris West, provided the Earth-X attack doesn't prevent them fro tying the knot. It has since been confirmed that Russell Tovey, who voices The Ray on this CW Seed digital series, will be portraying The Ray in this Arrowverse crossover.

Unlike past CW crossovers, this year's four-part crossover will air over two nights: Monday, November 27th and Tuesday, November 28th on The CW. Arrow will air on Thursdays this season, but for the crossover it will air on Monday at 9/8c after Supergirl, while the other DC shows will remain in their regularly scheduled time periods. It should also be noted that this crossover won't feature the next DC character that is coming to The CW in just a few short months, Black Lightning.

The CW recently confirmed that the Black Lightning series premiere date will be Tuesday, January 16 at 9 PM ET, following a new episode of The Flash. Shortly after The CW greenlit Black Lightning, it was confirmed that the network will not be airing all five shows at the same time, which meant that at least one show would be going on a hiatus while Black Lightning airs, and that show will be Legends of Tomorrow, with the official announcement revealing that the show will return with new episodes in February, although no exact date was given for Legends of Tomorrow's return. It hasn't been confirmed if there will be any crossovers or any mention of the Arrowverse as a whole in Black Lightning.

This crossover is a nod to the numerous "crisis" events held throughout the DC Universe since the Crisis on Infinite Earths comics introduced the concept of the Multiverse. It doesn't seem that there will be a second crossover this season, like last season when there was a musical crossover between Supergirl and The Flash, where stars Grant Gustin and Melissa Benoist, who both had roles on Glee before landing these superhero roles, put their singing and dancing skills on display for their fans. Take a look at the new trailer below, for this crossover, which comes courtesy of TV Promos YouTube.