Dissecting 'Legends of Tomorrow': Sara's Return and 4 Other Revelations (Video)

Legends of Tomorrow Screengrab - H 2015

Sometimes, you need a team to get the job done.

CW heroes and villains assembled in the first trailer for Legends of Tomorrow, which the CW debuted during its Upfronts presentation Thursday.

The Flash/Arrow spinoff centers on Rip Hunter (Arthur Darvill), a time traveling rogue who has seen a horrible future and assembles a ragtag team of heroes and villains to stop an unstoppable threat and prevent that future from happening. The CW ordered it to series last week, with the drama slated to bow in January or February as part of its midseason lineup.

The action-heavy footage answered questions fans had about the spinoff — and posed plenty more. 

See more 'Arrow': Everyone Who Has "Failed" Starling City (Photos)

How is Sara (Caity Lotz) alive?

Arrow introduced The Lazarus Pit in season three, using it to revive Thea (Willa Holland) after she nearly died. Fans have speculated the pit would be used to bring back Sara, who died early in season three, and the trailer confirmed that's the case. In comic book lore, Ra's al Ghul uses the pit to rejuvenate himself and even bring people back from the dead. In the trailer, Sara is referred to "a deceased assassin" as footage of her emerging from the Lazarus Pit plays.  While she went by Black Canary in Arrow, this time around she's playing White Canary. In the comics, White Canary is a mysterious villain introduced in 2010's Birds of Prey, where she tormented Black Canary (AKA, Sara's sister Laurel), but it's unclear if there is any connection between that comic character and Sara's character on the show. In Arrow, Merlyn (John Barrowman) said there are dire consequences for anyone brought back via the pit — as in that the person won't return the same. It's difficult to tell from the trailers if Sara is changed, but she appears to be fighting the good fight.

Who is the villain?

The team assembles to take down Vandal Savage, who in the comics is an immortal supervillain who has been causing trouble since pre-historic times. He combines a brilliant tactical mind with unparalleled technology. According to the trailer, Savage "commands the most powerful army the world has ever seen." He's got deep DC roots, first appearing in 1944's Green Lantern No. 10. Oliver says Savage is "thousands of years" old, while in the comics he is known to have been around for tens of thousands of years.

Who is Rip Hunter?

The team comes together because of Rip Hunter, a time-traveling bandit who is a member of the Time Masters, "an organization charged with protecting history itself." He says the team are considered "legends" — even the villainous Captain Cold (Wentworth Miller). He'll be taking the team through time to stop Savage wherever his crimes occur. The trailer shows a devastated shot of St. Louis, Mo. — presumably in the future Hunter is trying to stop. 

What happened to The Atom in the Arrow finale?

In Wednesday's Arrow, Ray appeared to blow himself up while conducting an experiment. But the tagline for the Legends of Tomorrow trailer shows what he really did — shrunk himself down to the size pea (we would say ant, but that's a different guy.) 

Oliver is back in costume?

In Wednesday's Arrow finale, Oliver (Stephen Amell) left Starling City and his Arrow identity behind. But this trailer shows Oliver suited up once again. Because of the time travel aspect, it's possible the rooftop conversation featuring the team and Barry Allen (Grant Gustin) takes place in the past. Just as likely, by the time the series premieres early next year, Ollie will be back in action as a vigilante in Starling City. 

Legends of Tomorrow stars The Flash's Wentworth Miller (Leonard Snart/Captain Cold), Dominic Purcell (Mick Rory/Heatwave) and Victor Garber (Dr. Martin Stein/one half of Firestorm). Also on the team are Arrow's Brandon Routh as Ray Palmer/the Atom and Caity Lotz (Black Canary). Ciara Renee (Kendra Saunders/Hawkgirl) and Franz Drameh (Jay Jackson) are also in the mix.

Read more 'Agent Carter' Showrunners Grilled By 'Arrow' Producer in Honest, Wide-Ranging Interview

The project is from Arrow creators Greg BerlantiAndrew Kreisberg and Marc Guggenheim. It hails from Bonanza Productions, Berlanti Productions and Warner Bros. Television. Legends of Tomorrow comes as Berlanti and Kreisberg have already received a series order for Supergirl, CBS' take on the DC Comics character from showrunner Ali Adler (No Ordinary Family).