Nora

Nora, otherwise known as XSundefined, is a speedster who time-traveled to the year 2018. She is also the daughter of Barry Allen and Iris West-Allen.

Birth
Nora was born to Barry and Iris presumably somewhere after 2018. She also presumably inherited her powers from her father.

Achieving her nickname
When Nora was a kid Barry called her XS. This name stuck with her and so it became her alter ego's name.undefined

Traveling to 2017
Nora was first seen as a waitress at Barry and Iris' wedding. There she offered Barry some water to Barry but Barry didn't really want water. She then told him that she was excited to be there. Barry then asked if he knew her to which she replied that she was no one special. After that she told Barry to make sure he said: 'I do' and walked away.

Sometime later she was seen again in CC Jitters. There she paid for Ralph Dibny and Cisco Ramon's drinks while totally nerding out. She was very excited to meet them and then went back to writing in her book. She was writing in the same signs as Barry was when he came out the Speed Force and also the same signs Harry Wells was writing with when his mind was fried by his version of the thinking cap.

She was then seen again a little later, again at CC Jitters. She accidentally spilled her drink over Caitlin Snow and Harry Wells. Caitlin then told her that it was fine and then left.

Another time she was seen was when she delivered a package to Cecile Horton and Joe West's baby shower. She accidentally slipped that the baby was coming in 21 days and then handed the package over. After seeing Iris she quickly sped off using her speedster powers.

When Barry was trying to destroy the satelite from DeVoe that was crashing down to the earth. She helped him destroy it, presumably changing something in the timeline.

Revealing herself
The day after destroying the satelite Nora appeared at the West house and told Barry, who opened the door, that they had to talk. When she walked in everyone, who had already seen her, mentioned where they knew her from. Barry then asked her who she was. Nora answered that she was his daughter from the future and that she thought she made a big, big mistake.

Later she revealed that she is stuck here in 2018 and asked if anybody knew what to do about it.undefined

Inside Barry's lab at the CCPD she said that she loved that place.undefined

In the Speed Lab Iris said that she couldn't believe it's her and Barry's daughter. To which Barry responded that she shouldn't be there and that she could "Marty McFly" herself out of existence. Barry also said she should be with her parents 30 years from now and not with them in 2018 revealing that she came from somewhere around 2048.undefined

Later in S.T.A.R. Labs Barry told Nora that he needed to know something. To which she responded with the question if her pokerface was that bad.undefined

Inside the Time Vault she apologized to Barry.undefined

Later when Barry says he doesn't have a suit, she told him that she had a back-up. Then she gave him the Flash Ring.undefined

Known Powers

 * Meta-human powers
 * Speed Force connection
 * Superhuman speed

In the comics

 * In the DC comics Nora Allen is the daughter of Barry Allen and Jessica Cruz. She is a speedster also known as Cruise.
 * In the DC comics XS is the alter ego of Jenni Ognats who is Barry Allen's granddaughter.