The Barry Allen villain Leonard Snart typically uses a gun that lets him use this power, and the most famous villain with this power suffered an industrial accident while trying to heal his terminally ill wife Nora and so requires a suit to survive.
The minor heroines Tora Olafsdotter and Sigrid Nansen both possess this power. Cameron Mahkent genetically inherited this power from his father Dr. Joar Mahkent, and the Firestorm adversary Dr. Louise Lincoln gained this power and became a supervillainess with the word (*) "Killer" in her title. The Barry Allen villain Leonard Snart typically uses a gun that lets him use this power, and the most famous villain with this power suffered an industrial accident while trying to heal his terminally ill wife Nora and so requires a suit to survive. For 10 points, name this thematic ability of the Batman villain Victor Fries.
The minor heroines Tora Olafsdotter and Sigrid Nansen both possess this power.
cold-based powers (accept really any synonym, like freezing or ice or snow; in order, the unnamed heroes/villains are Ice, Icemaiden, Icicle, Killer Frost, and Captain Cold)