She fights Green Arrow at Wayne Manor (alongside Solomon Grundy) and Deathstroke at the Ferris Aircraft facility (alongside Wonder Woman).
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Killer Frost returned during the events of One Year Later, where she had apparently entered into a relationship with Mr. Freeze.
Robert Frost | serial killer | David Frost | Bounty Killer | Sadie Frost | Stephen Frost | Leslie Frost | Killer Instinct | Jack Frost | Frost/Nixon | A Touch of Frost | Frost | Serial killer | Nick Frost | Killer whale | Henry: Portrait of a Serial Killer | Frost & Sullivan | Zodiac Killer | The Gaslamp Killer | Psycho Killer | Morten Frost | Killer Instinct (TV series) | Frost/Nixon (play) | frost | The Miniature Killer | Terry Frost | Martin Frost | Mark Frost | Killer's Kiss | Emma Frost |
In a flashback seen during the Forever Evil storyline, the H.I.V.E. were responsible for an act that turned S.T.A.R. Labs scientist Dr. Caitlin Snow into Killer Frost.