Super Friends, unite! In Entertainment Weekly's latest issue, the casts of "Arrow," "The Flash," "Supergirl" and "DC's Legends of Tomorrow" join forces for a first look at The CW's four-show "Invasion" crossover.

Cisco, Diggle, the Atom, Felicity, Heatwave, Green Arrow, Supergirl, Vixen and Citizen Steel strike a pose in one blockbuster photo, which also unveils a first look at Citizen Steel's all-new superhero costume. Decked out in red and blue, Citizen Steel's new look seems to pay homage to his grandfather Commander Steel.

Another photo brings the Flash into the fold, as he and Arrow duck behind a wall for cover and Diggle lurks just around the corner with his gun drawn. In the last photo, Stephen Amell and Grant Gustin flank Melissa Benoist for a staged look at the three stars.

Starring Melissa Benoist as the Girl of Steel, “Supergirl” airs Mondays at 8 pm ET/PT on The CW. The network is also home to Grant Gustin as the Scarlet Speedster in “The Flash,” airing Tuesdays at 8 pm ET/PT, Stephen Amell as the Emerald Archer in “Arrow,” airing Wednesdays at 8 pm ET/PT and Arthur Darvill, Brandon Routh and Caity Lotz in “DC’s Legends of Tomorrow,” airing Thursdays at 8 pm ET/PT.

Citizen Steel, Vixen, Cisco, the Atom and more stand strong in this new photo from Invasion.
The Flash and Green Arrow appear to be hiding from John Diggle, aka Spartan.
Grant Gustin, Stephen Amell and Melissa Benoist pal around behind the scenes.
Supergirl Season 2, Epsiode 7 Invasion! - Nov. 21, 2016 (L-R): Melissa Benoist as Kara/Supergirl, Grant Gustin as Barry Allen and Carlos Valdes as Cisco Ramon
The Black Canaries reunite!
Flash, Green Arrow and Supergirl are off to deal with an alien invasion.
Flash, Supergirl and Green Arrow are super friends, indeed.
The Flash, Green Arrow and Supergirl unite!