Board Thread:The Flash discussions/@comment-9346948-20171108005845/@comment-2054358-20171115040344

Unless Killer Frost is a soul of Caitlin's Earth-Two doppleganger that latched herself to her Earth-One body when Zoom killed her, I wouldn't count her as a separate character. And to kill Killer Frost, you'd have to kill Caitlin. Developing Killer Frost's personality to be more like Caitlin would not be killing someone. Taking away Caitlin's powers isn't killing Killer Frost either. Killer Frost and Caitlin is the same person, whether she likes it or not. Murdering Killer Frost without murdering Caitlin is impossible because it's just a metaphor. When people change, you can say the old version of that person is dead, but that's only metaphorically. Murder is killing someone physically.