Barry knows he can't do take the Dominators on his own, and he calls in reinforcements. Supergirl, being an alien herself, seems to be leading the charge.
H.R. may not be the scientist he said he was, but that doesn't mean he can't help with this mission. Felicity has always been on hand to help Barry out of a scrape.
Supergirl and The Flash got along great when they met on Supergirl last season, but will Supergirl and Arrow clash? Oliver and Kara may have different personalities, but they'll learn to work together.
Captain Cold going rogue again and becoming a member of the Legion of Doom is just depressing on so many levels. Guess he never got on the Waverider in this newish, post flashpoint timeline.
Captain Cold has no idea Mirror Master is behind him. He'll likely get the low down on Mirror Master, though, because Cold is a member of the Legion of Doom.
