Latest spoilers for the much-anticipated crossover between "Arrow," "The Flash," "Supergirl" and "Legends of Tomorrow" this fall come straight from Caitlin Snow/Killer Frost portrayer Danielle Panabaker. The actress spilled recently that Team Flash is off to face a defeat on Arrow-verse crossover event titled "Invasion."

Team Flash's Biggest Fear

In an interview with Entertainment Weekly, Danielle Panabaker said Team Flash will face once again The Dominators. It can be recalled that the metahuman alliance already faced this group of antagonists before and they never went through the battle that easily. Panabaker revealed that "the biggest fear for Team Flash is how powerful they are and how much of an unknown they are." Based on the comics, The Dominators has been gunning for the death of all metahumans as they are perceived as threats to the alien race.

Team Flash's Defeat

The actress further said that, in all honesty, Caitlin and her team have no idea as of now how to defeat the alien race as they are stronger than anyone can think of. As to the question if Team Flash will see its defeat against The Dominators, that's a huge possibility. Even so, Panabaker did not get down to the minutest details as to what will actually happen with the encounter.

Team Flash Seeks Supergirl's Help

"Arrow" and "Legends of Tomorrow" showrunner Marc Guggenheim revealed during a press interview in October that Barry/The Flash (Grant Austin) will seek the help of Kara/Supergirl (Melissa Benoist), a benevolent alien. As Guggenheim put it: "Once the heroes realize that they're up against aliens, they decide that they need an alien on their side." As of now though, there are no details yet as to which way Supergirl will head to Earth-1. Cisco (Carlos Valdes) and Barry will figure that out themselves soon.