"Supergirl" is officially part of The CW's lineup of DCTV shows, and -- thanks to "The Flash" and "Arrow" -- she's officially been inducted into their superhero family. In "Superhero Fight Club 2.0," a new promo for all four shows, Supergirl teams up with Flash, Arrow and a few "Legends of Tomorrow" for a mega DCTV crossover. The teaser is currently available to view on the new CW app, but you can catch the first full minute below.

In the full promo, Supergirl works with Green Arrow, The Flash, Atom, Firestorm and White Canary to take down any challenge that Cisco and Felicity throw at them, while Dig and Martian Manhunter observe. Like a DCTV Danger Room, the obstacles grow increasingly harder, until Supergirl finds the flaw in the design. Just as they think they've beat Cisco and Felicity at their own game, a new surprise player enters the arena.

Starring Melissa Benoist as the Girl of Steel, "Supergirl" premieres Monday, October 10 at 8 pm ET/PT on The CW. Starring Grant Gustin as the Scarlet Speedster, "The Flash" premieres Tuesday, October 4 at 8 pm ET/PT on The CW. Starring Stephen Amell as the Emerald Archer, "Arrow" debuts Wednesday, October 5 at 8 pm ET/PT on The CW. Premiering Thursday, October 13 at 8 pm ET/PT on The CW, "DC's Legends of Tomorrow" stars Arthur Darvill as Rip Hunter, Brandon Routh as the Atom, Victor Garber and Franz Drameh as Firestorm, Caity Lotz as White Canary, Maisie Richardson-Seller as Vixen, Dominic Purcell as Heatwave and Nick Zano as Citizen Steel.