Caitlin Snow

> *For her evil alternate personality, see Killer Frost (Split Personality).*
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"*They call me Killer Frost. Let me show you why.*"
—Caitlin Snow to Batman.[src]
Dr. **Caitlin Louise "Cait" Snow**, M.D. (born February 28, 1989), also known under the alias, **Louise Lincoln**, is a former doctor at S.T.A.R. Labs and also a former criminal in Gotham City. She is the daughter of Thomas and Carla Snow, sister of Charlie Snow, best friend of Laurel Lance, and the girlfriend of Ronnie Raymond. After being trapped and transformed into a meta-human via a cryo-chamber in S.T.A.R. Labs, Caitlin began going by the name **Killer Frost** and endlessly searched for a cure to her sickly mother's condition, a rare case of ALS. She fought Batman several times before joining his team after he promised to help find a cure. After defeating Hugo Strange, Caitlin moved to Earth-2 and joined Team Arrow, still in search of a cure. After defeating Count Vertigo and finally creating a cure for her mother, Caitlin returned to Earth-1 to live her life with her cured mother.

She eventually returned to Team Arrow and aided them in their fight against H.I.V.E., during which she discovered her father was in fact alive and had become a cold-hearted criminal named Icicle, who later resurrected her brother. After being further experimented on by her father, Caitlin developed an evil alternate personality who took on the mantle of Killer Frost herself. Eventually, she managed to overcome this personality, however, her appearance and physiology was permanently altered, allowing her to become much more powerful. She then vowed to revoke her dark past for good and adopted the moniker, **Frost**. Shortly after leaving Team Arrow and returning to Earth-1, Frost was ambushed by Amanda Waller, incarcerated in Belle Reve and made a member of Task Force X. After the team's encounter with the mysterious Enchantress, Caitlin showcased her willingness to help people by rescuing Waller from the Witch, earning a layer of trust and allowing her to work as a scientific advisor for A.R.G.U.S., however, whilst still remaining in their custody.

## Biography

### Early Life

Caitlin Louise Snow was born on February 28, 1989 in Metropolis to Thomas and Carla Snow, three years after her older brother, Charlie. Growing up, Caitlin was very close to her parents and her brother and believed and the three were very happy. However, when her father began suffering from the symptoms of a disease he had obtained from genetics, he experimented on himself with cryogenic technology and accidentally gave himself powers. He also realised that his children would also inherit the disease and began experimenting on them as well. However, the technology didn't work with his son but successfully worked on Caitlin and activated her meta gene.

### Working at S.T.A.R. Labs

#### Becoming Employed

Due to the grief of the loss of her father, Caitlin buried herself in her schoolwork and achieved straight A's in all of her subjects, mainly science and eventually graduated top of her class and eventually attended Metropolis University to study medicine. Even later, Caitlin managed to obtain two doctorates and a PhD. During her education, Caitlin also worked as an intern at her mother's company, Tannhauser Industries.

Eventually, Caitlin applied for a job as a bio-engineer at S.T.A.R. Labs which she successfully got and began working under Dr. Harrison Wells, her role model. She worked at S.T.A.R. Labs for at least four years, during which she became renowned for her bio-medical expertise and an important figure within the company. At some point, she also became acquainted with fellow scientist, Cisco Ramon.

#### Becoming Killer Frost

Caitlin's happiness was brought to a halt due to her mother becoming extremely ill and bed-ridden. It grew so serious that she was required to be put into a medically-induced coma so she could be treated, a condition that many doctors thought she wouldn't take up from. In order to cope with her sadness, Caitlin worked late every night, constantly searching for a cure that could save her mother's life.

## Powers and Abilities

### Powers

* **Meta-Human Physiology:** When Caitlin was young, her father feared that she also may obtain the same disease he had so he experimented on her with cryogenic technology, activating her dormant meta gene. However, these abilities would not surface until years later when she was locked in the freezing machine at S.T.A.R. Labs and her meta-gene was activated, allowing access to her cold powers. These powers manifest as a glowing white energy that emits from her eyes as she utilises them. After the experimentation by her father and defeating her alternate personality, Caitlin's physiology was further enhanced.
	+ **Thermokinetic Cryokinesis:** Caitlin's powers work by absorbing all the heat in the vicinity, bringing the temperature down to temperatures as low as 370 degrees below. Caitlin is also able to project pure blasts of ice from the palm of her hands, so below zero that it can reduce immensely strong materials, such as titanium, to shards of ice, displayed as she was able to freeze and destroy an incoming titanium batarang. These blasts of cryo-energy also contain enough momentum for Caitlin to propel herself upwards. Not only can she produce ice blasts as projectiles, Caitlin can even freeze an object or person solid with a simple touch. Since defeating her alternate personality and having her physiology permanently enhanced, Caitlin's cryokinetic abilities have grown even stronger, allowing her to freeze an entire body of water solid by simply being in the same vicinity.
		- **Ice Construct Creation:** Whilst having the ability to shoot a beam of pure ice, Caitlin is also capable of launching small or big icicles from her hands as shown on multiple occasions. The icicles themselves vary in lethality, but are always sharp enough to pierce through flesh.
		- **Cryokinetic Breath:** Caitlin is capable of creating a cloud of fog to cover any of her escapes such as when Killer Frost managed to escape Green Arrow and Black Canary. This wave of cryokinetic energy produced from her lungs is also powerful enough to knock a full group of grown adults to the ground.
		- **Limited Atmokinesis:** Caitlin is capable of lowering the temperatures and climate around her in a specific radius, altering the weather and causing it to snow.
	+ **Cold Immunity:** Caitlin is also able to withstand extremely low temperatures and seemed unaffected by a huge snow storm that hit the city. She is also able to hold her ice constructs with no trouble at all.
	+ **Accelerated Healing Factor:** Thanks to her cold abilities, Caitlin's metabolic rate is augmented to offset cold tissue destruction, thus allowing her to withstand and survive more grievous injuries. This was shown when she was shot in the back with two arrows and was still able to get away from the scene of her crime whilst fighting the Black Canary.

### Former Powers

* **Transformation:** Whenever Caitlin is accessing her powers, she alters her appearance at will with her brown hair becoming an icy white, her skin becoming several shades paler, her eyes turning an icy blue and her lips turning a shade of dark blue. She also uses this appearance alteration to hide her identity from nearby civilians. After she managed to destroy her evil alternate personality, this ability was lost and Caitlin's hair and lips became permanent shades of white and blue, respectively.

### Abilities

* **Genius Level-Intellect/Master Scientist/Physician:** Caitlin is possibly the most intelligent person to have been on Team Arrow so far, with a PhD and two doctorates under her belt by the time she was 28. Her skills have been a crucial part of Team Arrow's survival within such a brutal world of crime and her medical expertise has saved several peoples lives on multiple occasions. When she was employed at S.T.A.R. Labs, Caitlin was renowned as one of Harrison Wells' top scientists and one of his most, if not the most, intelligent member on his staff.
	+ **Computer Specialist:** As a former scientist at S.T.A.R. Labs, Caitlin was extremely skilled in technology, while not her main area of expertise she is still very well versed in technological advances.
	+ **Medical Knowledge:** Caitlin is an expert in medical care as she was able to patch up wounds so serious such as when Oliver was stabbed in the abdomen or when Laurel was shot in the shoulder.

* **Indomitable Will/High Pain Tolerance:** Caitlin is shown to have an extremely high tolerance of pain, even before her meta-gene was activated and she was considered human, before she was thrown into the machine at S.T.A.R. Labs she was shot in the leg and managed to stick through it and stay conscious.
* **Skilled Hand-to-Hand Combatant:** After becoming Killer Frost, Caitlin trained herself in order to gain better a physical condition and gain better control of her powers. She was able to learn quite a lot as she was seen to be able to enter a fight with multiple enemies and come out on top.

### Weaknesses

* **Abnormally High Temperatures:** In extremely high temperatures, Caitlin is unable to use her powers to their full potential and would burn up very quickly. Most of her constructs would also melt, rendering them useless.
* **Power-Dampening Technology:** When being held in A.R.G.U.S., Caitlin's cell was built with power-dampening technology, which deactivated her powers.

## Equipment

* **Frost Suit:** After adopting the anti-hero identity of simply Frost, Caitlin eventually obtained a new suit that featured the colours of black and blue, with a blue trench coat over the whole suit.

### Former Equipment

* **Killer Frost Suit****:** Whilst committing crimes, Caitlin wore a blue leather suit that also gave her protection whilst in the field. When she became a vigilante she ditched her villainous suit and began wearing a light blue jacket and leather pants with a snowflake symbol on the belt. When Killer Frost became her own personality and took over Caitlin's body, she went back to the villainous suit. She later ditched the villainous suit once again and, with no new official suit, began to wear mainly the colour black.

## Appearances

### Series

#### *Batman: Anarky*

Season 2
* "Frost Warning"
* "Lost Love" (mentioned)
* "Abandoned"
* "Fractured Minds" (mentioned)
* "Frostbite"
* "Hello, Junior"
* "Swimming With The Fishes"
* "Bat Family"
* "Welcome To Earth-2"
* "Escape From Earth-2"
* "Vengeance"
* "Metapocalypse"
* "Arkham Has Fallen"

Season 3
* "New Beginnings" (mentioned)
* "Bloodlines, Part 2"

Season 4
* "Amazons Attack, Part 2"

Season 5
* "Underworld Unleashed, Part 1" (mentioned)

#### *Green Arrow*

Season 1
* "Pilot"
* "Past Sins"
* "China White"
* "Motherly Love"
* "Vertigo"
* "The Bird's Nest"
* "Frosty"
* "Bloodlines, Part 1"
* "Meet The Count"
* "White Out"
* "Snowstorm"
* "The Caged Bird"
* "Birds Fly"
* "Shockwave"
* "Best Served Cold"
* "Time Bomb"
* "Bee's Knees"

Season 2
* "Friendly Face, Deadly Enemy" (mentioned)
* "Big Shot"
* "Jinxed"
* "Star-Crossed Lovers"
* "Secrets Don't Keep"
* "Amazons Attack, Part 2"
* "Keep Your Friends Close"
* "Lost Canary"
* "Hives"
* "Broken Hearts"
* "Don't Touch the Queen"
* "Cold Shoulder"
* "Welcome To Earth-3"
* "Battles Lost and Won, Part 1"
* "Battles Lost and Won, Part 2"

Season 3
* "Repercussions"
* "Show Me Your Dark Side"
* "Blood Bonds"
* "Choose a Side"
* "Arsenal" (mentioned)
* "Green Arrow vs. Black Canary"
* "My Name is Killer Frost"
* "Underworld Unleashed, Part 2" (as Killer Frost)
* "Making Amends" (as Killer Frost)
* "Escape" (mentioned)
* "Slay the Drakon" (as Killer Frost)
* "Icicle, Jr." (as Killer Frost)
* "Once a Merlyn, Always a Merlyn" (as Killer Frost)
* "Eden's Garden" (mentioned)
* "Escape From Reality" (as Killer Frost)
* "This is My City" (as Killer Frost)
* "All or Nothing"

Season 4
* "Enter the Slayer"
* "Legend of the Wonders"
* "Oh Sister, Where Art Thou?"
* "Seeing S.T.A.R.S."
* "The Beast"
* "Spoiler Alert"
* "Not As It Seems"
* "Wonders"

#### *Superman*

##### Season 1

* "Pilot"
* "Brothers In Arms" (mentioned)
* "General, Care to Step Outside?"
* "Tell The Truth" (mentioned)
* "No One Left Behind" (mentioned)
* "Amazons Attack, Part 1"

#### *Wonder Woman*

##### Season 1

* "Pilot (name seen)
* "Glass Ceiling, Glass Heart" (photograph)

#### *Justice Society*

##### Season 1

* "By the Hour" (mentioned)
* "Star-Spangled" (mentioned)
* "The Beginning"

## Trivia

* Caitlin's middle name being "Louise" is a reference to the second Killer Frost, Louise Lincoln.
	+ Her later using "Louise Lincoln" as an alias is also a direct reference to the character.
* Caitlin is extremely similar to Victor Fries.
	+ Both are ice-based villains with Fries using a freeze ray and Caitlin using her meta-human abilities.
	+ Both are driven by loved one who are dying due to a serious illness.

## Behind The Scenes

* In the comics, **Dr. Caitlin Snow** is well-known for being the third version of the meta-human criminal **Killer Frost**. However, in the current comic timeline, she is portrayed as an anti-hero and member of the Justice League.