Then, it was confirmed Captain Cold would return to Legends of Tomorrow – but as a member of the Legion of Doom.
As such, one of the main members of the Waverider crew in Legends of Tomorrow season 1, Leonard Snart aka Captain Cold (Wentworth Miller), got his start as a villain on The Flash alongside his partner in crime Mick Rory aka Heat Wave (Dominic Purcell).
While the villainous team has proven to be a thorn in the side of the Legends in season 2, Captain Cold has yet to join their ranks.
Now, it seems that particular team up is on the horizon since Miller was spotted on the Legends of Tomorrow set.