Ever since the name Caitlin Snow popped up on The Flashs cast list, many fans perked up. Realizing that this was also the identity of the new Killer Frost in the comics, it didnt take a genius to figure out where this character was eventually headed. This transformation was most notably hinted at during the finale, where Barry, while running through the Speed Force, caught a brief glimpse of Caitlins villainous alter-ego. Rather than having to wait years to see Caitlins gradual descent into madness, it seems we will be treated to Killer Frost much sooner than expected. Thanks to the presence of Earth-2, it's been revealed that we will be able to briefly experience the might of Killer Frost this year, presumably sent by Zoom at some point to face off against The Flash Its unclear when exactly shes going to show up but all of the actors and writers involved seem very excited about her inclusion. To that end, will she stick around or be a one-time villain? Theres a lot of questions still to be answered so hopefully well enjoy the process of finding the answers to them.