Caitlin Snow

"They call me Killer Frost. Let me show you why."

Dr. Caitlin "Cait" Snow (born February 28, 1989) is a bio-engineer at S.T.A.R. Labs and a former scientist at Mercury Labs. She was working during the particle accelerator disaster and tended to Barry Allen during his coma with Cisco Ramon until he woke up. After he began his crusade as "The Flash" Caitlin became a member of his team with Cisco and Dr. "Harrison Wells", before discovering the latter's true identity as Eobard Thawne, and provides medical support for the team. Caitlin is the daughter of the late Dr. Thomas Snow and Dr. Carla Tannhauser, the widow of the late Ronnie Raymond, and close friends with Cisco, Barry, Felicity Smoak, Kara Danvers, Professor Martin Stein, Iris West, and Ralph Dibny. She is also the former lover of "Jay Garrick", before discovering his true identity as Hunter Zolomon, and the ex-girlfriend of Julian Albert.

Appearances
The Flash:


 * Pilot"
 * "Fastest Man Alive"
 * "Things You Can't Outrun"
 * "Going Rogue"
 * "Plastique"
 * "The Flash is Born"
 * "Power Outage"
 * "Flash vs. Arrow"
 * "The Man in the Yellow Suit"
 * "Revenge of the Rogues"
 * "The Sound and the Fury"
 * "Crazy for You"
 * "The Nuclear Man"
 * "Fallout"
 * "Out of Time"
 * "Rogue Time"
 * "Tricksters"
 * "All Star Team Up"
 * "Who is Harrison Wells?"
 * "The Trap"
 * "Grodd Lives"
 * "Rogue Air"
 * "Fast Enough"


 * "The Man Who Saved Central City"
 * "Flash of Two Worlds"
 * "Family of Rogues"
 * "The Fury of Firestorm"
 * "The Darkness and the Light"
 * "Enter Zoom"
 * "Gorilla Warfare"
 * "Legends of Today"
 * "Running to Stand Still"
 * "Potential Energy"
 * "The Reverse-Flash Returns"
 * "Fast Lane"
 * "Welcome to Earth-2"
 * "Escape from Earth-2"
 * "King Shark"
 * "Trajectory"
 * "Flash Back"
 * "Versus Zoom"
 * "Back to Normal"
 * "Rupture"
 * "The Runaway Dinosaur"
 * "Invincible"
 * "The Race of His Life"


 * "Flashpoint"
 * "Paradox"
 * "Magenta"
 * "The New Rogues"
 * "Monster"
 * "Shade"
 * "Killer Frost"
 * "Invasion!"
 * "The Present"
 * "Borrowing Problems from the Future"
 * "Dead or Alive"
 * "Untouchable"
 * "Attack on Gorilla City"
 * "Attack on Central City"
 * "The Wrath of Savitar"
 * "Into the Speed Force"
 * "Duet"
 * "Abra Kadabra"
 * "The Once and Future Flash" (as Killer Frost)
 * "I Know Who You Are" (as Killer Frost)
 * "Cause and Effect"
 * "Infantino Street" (as Killer Frost)
 * "Finish Line"


 * "The Flash Reborn"
 * "Mixed Signals"
 * "Luck Be a Lady"
 * "Elongated Journey Into Night"
 * "Girls Night Out"
 * "When Harry Met Harry..."
 * "Therefore I Am"
 * "Crisis on Earth-X, Part 3"
 * "Don't Run"
 * "The Trial of The Flash"
 * "The Elongated Knight Rises"
 * "Honey, I Shrunk Team Flash"
 * "True Colors"
 * "Subject 9"
 * "Enter Flashtime"
 * "Run, Iris, Run"
 * "Null and Annoyed"
 * "Lose Yourself"
 * "Fury Rogue"
 * "Therefore She Is"
 * "Harry and the Harrisons"
 * "Think Fast"
 * "We Are The Flash"


 * "Nora"
 * "Blocked"
 * "The Death of Vibe"
 * "News Flash"
 * "All Doll'd Up"
 * "The Icicle Cometh"
 * "O Come, All Ye Thankful"
 * "What's Past is Prologue"
 * "Elseworlds, Part 1"
 * "The Flash & The Furious"
 * "Seeing Red"
 * "Memorabilia"
 * "Goldfaced"
 * "Cause and XS"
 * "King Shark vs. Gorilla Grodd"
 * "Failure is an Orphan"
 * "Time Bomb"
 * "Godspeed"
 * "Snow Pack"
 * "Gone Rogue"
 * "The Girl With The Red Lightning"
 * "Legacy"


 * "Into the Void"
 * "A Flash of the Lightning" (as Frost)
 * "Dead Man Running" (as Frost)
 * "There Will Be Blood" (as Frost)
 * "Kiss Kiss Breach Breach"
 * "License to Elongate" (as Frost)
 * "The Last Temptation of Barry Allen, Pt. 1"
 * "The Last Temptation of Barry Allen, Pt. 2"
 * "Crisis on Infinite Earths: Part Three"
 * "Marathon"
 * "Love Is A Battlefield" (as Frost)
 * "Grodd Friended Me" (as Frost; as Caitlin in Grodd's mind)
 * "Death of the Speed Force"
 * "The Exorcism of Nash Wells"

Arrow:


 * The Man Under the Hood
 * Seeing Red (Mentioned)
 * The Brave and the Bold
 * The Climb
 * Legends of Yesterday
 * Crisis on Earth-X, Part 2
 * Elseworlds, Part 2
 * Star City Slayer (Mentioned)

Supergirl:


 * Worlds Finest (Mentioned)
 * Crisis on Earth-X, Part 1
 * Elsewords, Part 3 (as Killer Frost)

DC's Legends of Tomorrow:


 * Invasion!
 * Moonshot (Mentioned)
 * Crisis on Earth-X, Part 4
 * The Curse of the Earth Totem (Mentioned)
 * Crisis on Infinite Earths, Part 5

Stretched Scene:


 * Stretched Scene #1
 * Stretched Scene #2 (name on screen)
 * Stretched Scene #3

Freedom Fighters: The Ray


 * Episode Five

The Flash: Season Zero


 * "The Strongman Cometh" (flashback)
 * "Who Let the Chimps Out?"
 * "A Goodnight Hiss"
 * "Big Top Brawl"
 * "The Talented Mr. Bliss" (mentioned)
 * "A Captive Audience"
 * "Showtime"
 * "The Big Finale"
 * Smoak Signals part 1
 * "Bite Marks"
 * "Shark Bait"
 * "Blood Loss"
 * "A Little Help from Some Friends"
 * "The Impossible Mission"
 * "A Minor Setback"
 * "A New Home"
 * "Black Star"
 * Mentors and Meltdowns part 1
 * Mentors and Meltdowns part 2

Novels:


 * The Flash: The Haunting of Barry Allen
 * Arrow: A Generation of Vipers
 * The Flash: Hocus Pocus
 * The Flash: Climate Changeling

The Chronicles of Cisco:


 * Post 3 "Chapter Two: Prism" (mentioned)
 * Post 4 "Chapter Three: The Mist" (mentioned)
 * Post 5 "Chapter Four: Cinema Cisco" (mentioned)
 * Post 7 "Chapter Five: Mark Mardon" (mentioned)
 * Post 8 "Chapter Six: Brie Larvan" (mentioned)
 * Post 11 "Chapter Nine: Cisco Disco" (mentioned)
 * Post 12 "Chapter Ten" (mentioned)
 * Post 14 "S.T.A.R. Labs 4EVR!!!" (mentioned)
 * Post 20 "A Little TLC!" (mentioned)
 * Post 25 "BBFF" (mentioned)
 * Post 26 "Bon Voyage!" (mentioned)
 * Post 27  (mentioned)
 * Post 28  (mentioned)
 * Post 32 "Zoom.Is.Jay." (mentioned)
 * Post 40  (video footage)
 * Post 42  (mentioned)
 * Post 45 "We Conquered El Gigante!" (mentioned)
 * Post 46  (mentioned)
 * Post 47 "#AlienMovieNight" (mentioned)
 * Post 50 "Kid Flash and Vibe's Excellent Adventure" (mentioned)
 * Post 54 "#FlashKaraoke" (mentioned)
 * Post 55 "#EmoCisco" (mentioned)
 * Post 56 "#WhoIsSavitar?" (mentioned)
 * Post 57  (mentioned)
 * Post 60  (mentioned)
 * Post 61 "Now Playing: Kid Flash & Vibe's Excellent Adventure Pt. II" (mentioned)
 * Post 62  (mentioned)
 * Post 63 "Laser Tag: The Sequel" (mentioned)
 * Post 64 "Cisco's Super Spooky Moviethon 2017" (mentioned)
 * Post 69 "Killer Night Out" (mentioned)
 * Post 70 "#GhostVibe" (mentioned)
 * Post 74 "#StarLabsGames" (mentioned)
 * Post 75 "#AttackOfTheCorn" (mentioned)
 * Post 78  (video footage)
 * Post 82 "#Flashtime" (video footage)
 * Post 84 "#CiscoCarpeDiem" (video footage)
 * Post 93 "#BreacherFail" (mentioned)