Khione (Earth-Prime)

"I found out today that my father always dreamed of creating something or someone new, and he called her Khione. But science is like nature. It can be cruel as well as beautiful. Either way, we can't control it. So, I know Caitlin and Frost are gone, and we can mourn the flowers that have fallen from the vine, but we can't ask a new bloom to give up its place in exchange. I hope you can accept that. I hope you can accept me, 'cause I'd like to live and grow with all of you."

- Khione to Team Flash

Khione, also briefly known as Snow, is the result of Caitlin Snow entering the Consciousness Resurrection Capsule in an attempt to resurrect Frost.

Snow and Frost
After Frost's death in the battle against Deathstorm, both Caitlin Snow and Mark Blaine were hellbent on resurrecting Frost from the dead. After Barry Allen destroyed initial researches, Blaine created a Consciousness Resurrection Capsule that could restore Frost within Snow's body. However, due to a power fluctuation, a completely different person, with no memories of Snow and Frost was created. As Blaine stared at the new person in confusion and questioned her, she claimed that she was a friend.

Meeting Team Flash
A week later, the being, going as "Snow", used Caitlin's phone to send a distress signal, alerting Barry Allen to the lounge at S.T.A.R. Labs. Snow claimed that she was not Caitlin nor Frost, before Blaine revealed himself and explained the situation to Team Flash. Allen demanded answers as to what happened to Caitlin, with Blaine claiming that she had died. Blaine also explained that he required a stable power source to restart the Consciousness Resurrection Capsule to reverse the process and bring back Caitlin. Unbeknownst to Team Flash, Blaine had actually planned to bring both Caitlin and Frost back, which resulted in a painful process on Snow as they restart the process.

Choices
Snow continued to wander around S.T.A.R. Labs as she recovered, later coming across Hartley Rathaway at Caitlin's lab. Rathaway worked on repairing his Sonic Gauntlets against Andrea Wozzeck, whom he planned to kill. Snow expressed her disapproval, claiming that killing is wrong. However, Rathaway remained persistent, but was able to teach Snow about the concept of choice in their conversation.

Cecile Horton later approached Snow and conversed with her about her current situation. Snow was not sure whether who Team Flash would choose to bring back, as the machine can only restore the consciousness of one out of the two Snow sisters. Despite this, Horton told Snow not to blindly follow the choices of the team, but rather go with her own choice. Snow decided that she would not return to the capsule, and decided that she would live a life as her own person, now renaming herself as "Khione" after Thomas Snow's initial plans. Blaine was furious over her decision, and attempted to restart the capsule against her will. Thankfully, Rathaway was able to destroy the capsule with his supersonic scream, eradicating the chances of any further arguments revolving around Khione.

Powers

 * Gas Mimicry: Khione has the ability to transform herself into a gas cloud, allowing her to seep through small gaps.
 * Ice Healing: When Khione kissed Blaine, she was able to heal his injuries and wake him up from unconsciousness.
 * Life Detection: Khione sensed Iris West-Allen's pregnancy, even before West-Allen herself was aware of it.
 * Weather Manipulation: Khione involuntarily created snow to rain down in the S.T.A.R. Labs lounge.
 * Cryokinesis: After being called by the Spectre to return to S.T.A.R. Labs, Khione was able to immobilize an infected horde of Blood Brothers by freezing the liquid in their body. She also showed the ability to unfreeze them afterwards.