Killer Frost

Killer Frost is a name used by several fictional female supervillains and superheroes know as Frost appearing in comic books published by DC Comics: Crystal Frost, Louise Lincoln, and Caitlin Snow. Each different individual in the DC Universe assuming the Killer Frost persona usually has some connection to the superhero Firestorm.
Various iterations (Crystal Frost and Louise Lincoln) have appeared in various animated projects and video games with most of them having the character voiced by Jennifer Hale. Danielle Panabaker portrays Caitlin Snow on the shared DC "Arrowverse" shows, where she is a main character on the television series "The Flash".
Fictional character biographies.
Crystal Frost.
Crystal Frost was the first incarnation, first appearing in "Firestorm" #3 (June 1978). While Frost was studying to be a scientist in Hudson University, she fell in love with her teacher Martin Stein. While working on a project in the Arctic, Frost was upset to learn that Stein did not reciprocate her feelings; Stein told a fellow researcher that Crystal was a withdrawn student and that he had merely tried to draw her out of her shell, which Crystal completely misinterpreted. Frost accidentally locked herself in a thermafrost chamber but survived, being transformed in a way in which she was able to absorb heat from a living being and project cold and ice. Calling herself "Killer Frost", she began her murderous crusade against men and clashed with Firestorm on many occasions. Killer Frost eventually died after she absorbed too much energy from Firestorm. Crystal has been identified as one of the deceased villains entombed below the Hall of Justice. Her body was reanimated as a Black Lantern.
Louise Lincoln.
Dr. Louise Lincoln is the second incarnation; she first appeared in "Firestorm" (vol. 2) #21 (March 1984) and used the "Killer Frost" name in "Firestorm" vol. 2 #34 (April 1985). Lincoln was a colleague and friend to Crystal Frost. After her friend's death, she decided to repeat the experiment as a last respect to her former mentor, and became the second Killer Frost. She became just as ruthless as her predecessor and began her own personal vendetta against Firestorm whom she blamed for Crystal's death. She briefly served as a member of the Suicide Squad and sold her soul to Neron for more power.
During the "Underworld Unleashed" event, Killer Frost attacked Hawaii, freezing part of the islands before being stopped by Superboy and Knockout.
After a group of mobsters put out a hit on Lois Lane, Killer Frost rescued Lois from Solomon Grundy, only to then leave the reporter bound and gagged on a set of train tracks, hoping to take the credit and reward for Lane's death. Her plan was foiled by Superman who rescued Lois before the train could hit.
Killer Frost was later freed when the DEO refrigeration truck transporting her crashed. Effigy happened upon the crash and she discovered the heat from Effigy's pyrokinetic abilities enabled her to kiss Effigy without him freezing over. The two had a brief flirtatious partnership that dissolved when Effigy lost patience with her lecturing on how to defeat Green Lantern. After Green Lantern buried them both under a mountain of snow, Effigy escaped and abandoned her to be apprehended again.
In the "Superman/Batman" "Public Enemies" arc, Killer Frost was one of many supervillains seeking to earn a $1 billion reward offered by President Lex Luthor to sanction Superman and Batman. She teamed with Mister Freeze, Icicle (Cameron Mahkent) and Captain Cold in an attempt to ambush the two heroes in Washington D.C., but all four were defeated. They attacked in a second wave, along with more villains such as Giganta and Gorilla Grodd, but a similar backup of superheroes battered them all into submission. It was later discovered that this ice-themed team of villains was being mind controlled by Grodd.
Dr. Light hired Killer Frost and Mirror Master to attack Green Arrow and Black Lightning at a hospital in Chicago, Illinois, where Kimiyo Hoshi was being held. Green Arrow stopped Killer Frost by firing an arrow filled with Greek fire into her thigh. Unable to absorb the heat from the arrow, she was defeated.
Around this time, Lincoln discovered that she had contracted cancer, and tricked Jason Rusch, the new Firestorm, into curing her. With her health and powers restored, Killer Frost went on a rampage, only to be defeated when Jason's abilities reversed the alterations to Lincoln's body, returning her cancer.
Killer Frost returned during the events of "One Year Later", where she had apparently entered into a relationship with Mr. Freeze. Together, the two villains went on a killing spree in Manhattan, hoping to draw Firestorm into an elaborate trap. Once the hero arrived, Killer Frost used a device to send both of them into space, where she sought to absorb the heat energy of the sun. Firestorm narrowly managed to stop her plan, and both Killer Frost and Mister Freeze were taken into custody by Batman. As they were being sent away, Killer Frost angrily revealed to Mister Freeze that she had only been using her lover as a pawn, and had no romantic interest.
Killer Frost was later seen battling Firestorm in the "Justice League of America Wedding Special" until Lex Luthor, Joker and Cheetah arrived, subdued Firestorm, and invited Killer Frost to join the new Injustice League. She then appeared in "Salvation Run", where she was sent to the Prison Planet after having been defeated and captured by the Suicide Squad.
In "DC Universe" #0, she was seen as a member of Libra's Secret Society of Super Villains. She is later seen as one of the villains sent to retrieve the Get Out of Hell Free card from the Secret Six, and ultimately helped deal the killing blow to the crazed supervillain Junior and the troubled vigilante Tarantula. A short time after this encounter with the Secret Six, Killer Frost appeared as one of the participants in a metahuman fighting tournament in Tokyo. She was defeated by Wonder Woman and Black Canary who had disguised themselves as villains in order to take down the tournament from the inside.
The "DC Rebirth" version of Louise Lincoln debuts in the "Watchmen" sequel "Doomsday Clock." While Firestorm considers "The Superman Theory" as a hoax, Killer Frost claims that Captain Atom, Firehawk, Moonbow, and Typhoon are the government's creations. Killer Frost later accompanied Black Adam in his attack on the White House.
Caitlin Snow.
The New 52.
In September 2011, The New 52 rebooted DC's continuity; Killer Frost is reintroduced in September 2013, as the "Villains Month" part of the "Forever Evil" – she was featured in the one-shot "Justice League of America" #7.2, also titled "Killer Frost" #1. She can also be seen on the cover of "Forever Evil" #1, which hints at her involvement in that series where she's revealed to be Dr. Caitlin Snow, a scientist sent to S.T.A.R. Labs Outpost #72 in the Arctic to work on a thermodynamic engine whose creator had committed suicide. Snow soon discovered the place had been infiltrated by H.I.V.E. agents. When they tried to kill her inside the engine, Snow frantically ripped off the coolant system, merging her body with ice. Transformed into a heat vampire, she killed the H.I.V.E. agents out of revenge. She then wandered out into the cold until she came across a Norwegian camp and took their heat too. Hijacking a helicopter, she made it back to her hometown Pittsburgh. She even created a suit that helped her retain heat for longer. She later encountered the superhero Firestorm and discovered that his powers could temporarily heal her mutation. She tried recreating the Firestorm Nuclear Matrix several times, only to fail with each attempt. When Firestorm and the Justice League were declared dead by the Crime Syndicate, she lost hope for a cure to her condition.
Killer Frost later has a scientist named Byte track down Martin Stein, the original creator of the Firestorm Matrix, to his secluded cabin while he had gone into hiding during the Crime Syndicate's takeover of Earth. She encountered Steve Trevor who was sent there on a mission to try to find the Justice League who were imprisoned inside Firestorm. Learning he was alive, Snow allied herself with the two men to find them. Soon they were attacked by supervillains Multiplex, Black Bison, Hyena, Tempest and Plastique for betraying the Syndicate. While fighting them off, Stein, Trevor and Frost teleported to another A.R.G.U.S. base, where they learned that to free the Justice League, they needed Wonder Woman's Lasso of Truth. Discovering Cheetah was keeping it as a trophy, they found her and her Menagerie, but were subdued. Doctor Light (Arthur Light) suddenly appeared and blasted everyone except Frost and Trevor unconscious. After defeating him, they managed to deliver the Lasso of Truth to Cyborg who successfully used it to free his teammates.
DC Rebirth.
In DC Rebirth, Caitlin Snow is taken to Belle Reve Penitentiary, where she is introduced to the Suicide Squad and offered a place on the team by Amanda Waller. She accepts and joins the team. She helps the Suicide Squad in their fight against the Justice League, but subsequently assists them against Maxwell Lord when he is possessed by Eclipso, whose attempt to tap into her "darkest desire" only unlocks her desire to make a difference. She then has to save all the Suicide Squad and the Justice League by absorbing the energy out of Superman and using it against Maxwell Lord. Afterwards, Waller is forced to release Snow into Batman's custody. She then joined the new Justice League of America made up of Batman, the Atom, Lobo, Black Canary, Vixen and the Ray.
Powers and abilities.
All versions have shown the ability to absorb heat from external sources and transmute it into waves of cold. Using these powers, Killer Frost can create an ice-sheen across her entire body that grants her increased durability, cause intense blizzards that can instantly freeze the target and generate objects composed completely of ice, such as projectiles in the form of ice shards and defensive walls or shields. She can also instantly freeze animate matter through physical contact and is unable to touch a normal person without freezing them.
Her weakness is the need to absorb external heat sources to generate ice: although heat-based weapons such as flamethrowers only make her stronger, she can be imprisoned in cold surroundings such as being locked in a refrigeration truck or buried under a mountain of snow. The Caitlin Snow version of Killer Frost is constantly plagued by a hunger for heat, which can only be sated by absorbing the heat from a living being, a process which inevitably kills the victim. However, in recent stories she seems to have finally gotten it under control by only absorbing a tiny amount of heat from every person she touches, sparing them and leaving them otherwise unharmed. The Caitlin Snow and Louise Lincoln versions of the character have, albeit inconsistently, demonstrated the ability to fly, either by riding Arctic winds or through an unknown manner of self-propulsion.
While the exact limits of her abilities have yet to be established, how much power Frost can channel at once seems to depend on how much heat she has absorbed and stored in her body. For example, when she absorbed all the heat from Superman (whose body is supercharged by yellow solar energy) during a stand-off between the Justice League and the Suicide Squad, she was able to flash-freeze the entire League in a single blast.
It also seems that using up all the heat energy she has stored can put Frost's life in danger. If she does not feed in time, she even risks dying of "starvation".
The Caitlin Snow version also boasts a genius-level intellect, being S.T.A.R. Labs' youngest and brightest scientist prior to her transformation. She could solve complex equations easily, operate heavy energy generating machinery and appeared particularly skilled in the field of physics and research about energy. She once managed to create an ice prism with her powers that converted Superman's heat vision into a bright burst of sunlight to defeat Eclipso.
Several adaptations of the villain have also depicted the Crystal Frost and Louise Lincoln incarnations as having basic skills in melee combat which they use in conjunction with their powers as well as impressive agility, being able to perform maneuvers such as leaps or cartwheels with ease.
Other versions.
DC Super Friends.
Killer Frost appeared in the "DC Super Friends" comic as part of a group of ice-themed villains called the "Ice Pack" that encased a city in ice and snow.
Justice League Adventures.
The Crystal Frost version appeared along with Mr. Freeze, Captain Cold, Minister Blizzard, Cryonic Man, Icicle, Polar Lord and Snowman in the "Justice League Adventures" comic.
DC Bombshells.
Killer Frost appears in the "DC Bombshells" continuity, which takes place during World War II. She serves Hugo Strange of the Nazi Regime alongside Penguin and a brainwashed Harvey Dent (who is eventually rescued by the Batgirls). While Penguin is in love with her, it's unknown if she truly reciprocates the same feeling. This version is Louise L'inconnue, who is of French and German descent. In 1870, her mother is killed by angry villagers for conceiving a child with a German man and was thrown into an ice-cold well to die with her child. Louise emerges from the well with blue skin and freezes all the villagers to death. She is later adopted by the Joker's Daughter, who trained her in magic and controlling her powers (while also giving her the chance to kill her father). After clashing with Baroness Paula Von Gunther, she expresses her desire to have the world filled with superhumans like her.
DC Super Hero Girls.
Killer Frost appeared in the "DC Super Hero Girls" by the name of "Frost". In the series, she is shown to be a superhero, instead of a supervillain. She has her own separate bio with her powers and personality listed. She is shown to be very smart too. There she lives with Lady Shiva, Miss Martian and Star Sapphire. She has her own bedroom with: a nightstand, a king sized bed, a desk and other decorations. Her appearance is also different: she has long hair made into a ponytail. She has blue eyes, white skin and all of her outfits have something to do with ice and snow.
Injustice: Gods Among Us comics.
Killer Frost made an appearance in the comic book prequel to "".
In other media.
Television.
Arrowverse.
Danielle Panabaker portrays Dr. Caitlin Snow / Killer Frost, a series regular on "The Flash" live-action series, which is set within The CW's Arrowverse family of related shows. Her character also makes occasional guest appearances on "Arrow" (in which she debuted), "Legends of Tomorrow", and "Supergirl". In "The Flash", she is a part of the Central City-based S.T.A.R. Labs team alongside Cisco Ramon / Vibe and Harrison Wells, which supports Barry Allen / Flash.
In season one, she struggles with her fiancé Ronnie Raymond's death following S.T.A.R. Labs particle accelerator exploding and creating various metahumans before later discovering Ronnie survived as part of the fire-based superhero Firestorm. Caitlin and Ronnie later marry, but shortly thereafter, Ronnie gives his life to help the Flash close a singularity that opened over Central City. During season two, Caitlin grieves for Ronnie, but grows closer to Hunter Zolomon while he was disguised as Jay Garrick. When Zolomon reveals he has a disease that limits the use of his super-speed, Caitlin develops the Velocity serum to save his life. However, she and Team Flash soon discover Zolomon's true identity before he kidnaps her and takes her to Earth-2, where she meets her evil Earth-2 doppelganger Killer Frost. Following this encounter, she begins to fear whether she has a capacity for evil as well.
Due to Barry altering the timeline while creating and undoing the "Flashpoint" timeline in season three, Caitlin has developed cryokinetic abilities and an alternate, villainous personality, both of which she attempts to hide from her friends. She also develops a relationship with Julian Albert. Caitlin is advised by her mother, Dr. Carla Tannhauser, to not to use her powers or her transformations will become irreversible. Catlin's abilities fully manifest when Julian takes a power-suppressing necklace off so her healing abilities could save her, triggering her transformation into Killer Frost. Acting as Savitar's personal enforcer, Killer Frost battles Team Flash alongside him. After a fight with Vibe, she turns against Savitar after being given a cure developed by Julian. She defends her former teammates from Savitar and assists in defeating him, but leaves to rediscover herself.
In season four, Caitlin and Killer Frost develop a "Jekyll and Hyde"-esque relationship. The former works in a criminal underworld bar until Vibe convinces her to return to Team Flash. Caitlin also comes to terms with her dual personalities, giving her the ability to switch between her two personas at will. Furthermore, Killer Frost begins to show a more heroic side and agrees to use her powers to help Team Flash. Later in the season, Caitlin discovers her powers and Killer Frost came from her childhood and that she suppressed the memories. In season five, she discovers further that her father, Thomas Snow, experimented on her and himself in an attempt to cure their ALS genes, resulting in them both developing alternate personalities with cryokinetic powers. After he became Icicle, Caitlin and Killer Frost worked to save Thomas from his evil persona. During the sixth season, Caitlin experiments with giving Killer Frost more time with their shared body and allowing her to live her own life.
In the seventh season, Caitlin and Frost split into two different bodies after being blasted by Mirror Monarch's Mirror gun. They decide not to merge and instead live their lives as twin sisters.
Miscellaneous.
Killer Frost appeared in the "Justice League Unlimited" spin-off comic book along with Secret Society teammate Heat Wave.