Tina McGee (Earth-90)

Christina "Tina" McGee was a scientist at S.T.A.R. Labs and the wife of Barry Allen.

Early life
During her years in college she met and befriended David and Carl Tanner though later, she would eventually get into a romantic relationship with David.

At some point in 1989, she and David got married and both eventually became scientist that work for S.T.A.R. Labs.

In 1989, her husband David discovered a special enzyme that can stimulate the human's brain and enhance his senses. Tina and her husband were ordered by the government to test the enzyme on human subjects, but because they refused, the government cut their funding until they agree to do the test. One morning, Tina found David's body in the lab due to him serving as the test subject for the enzyme. This would cause S.T.A.R. Labs reputation to decline to the point where Tina was the last scientist in the building.

Meeting Barry Allen and birth of the Flash
In 1990, a doctor from the city's hospital contacted Tina about someone that got struck by lightning and has some form of cellular damage. Later, the doctor would warn her that the patient Barry Allen has declined to come to S.T.A.R. Labs. Days later, Barry would eventually accept her call and come to S.T.A.R. Labs. When they first met, they are both surprised about their appearances then they entered the building. Barry misjudged S.T.A.R. Labs due to the incident that led to the death of someone last year until he realized that it was Tina's husband. She placed Barry on a treadmill in order to test his "speed" and see how fast he could run but due to Barry running to fast, the treadmill broke. After some few tests, she and Barry went to eat at a pizza place due to his low blood pressure, and she told Barry to keep his abilities a secret because the last time the government discovered something, it caused her husband's death. The next day, Tina and Barry were at S.T.A.R. Labs test track and equipped Barry with an abandoned Soviet prototype deep-sea suit in order for his body to handle the heat. After some few laps, Barry took Tina but because she is not equipped to handle the speed, her clothes got torn apart. They then talked about how Barry felled about the speed but before he could finish his sentence, Barry almost pass out. Barry brought Tina to the precinct where she met Julio Mendez, Barry's best friend. She noticed that the lab's computer identified a sample belonging to Nicholas Pike which Barry recognized to be his brother former partner that went rogue. After Barry deduced that Pike was planning to murder his brother in an ambush, Tina tried to warn him that it was dangerous to go by himself. Days later, Barry came to S.T.A.R. Labs and asked Tina if she could add gloves and a hood in order to conceal his identity and bring Pike to justice. He then asked her to add an emblem on his chest that represent a bolt of lightning. During the night, Barry got injured at the leg and Tina received a notification about Barry's injury, and she went to find him only to see that his colleague brought him back to his apartment. Tina entered Barry apartment and told him that she would like to check out his leg and met Iris West that was already waiting Barry inside his apartment. The following day, Barry would pass out again but got the time to call Tina before passing out. At S.T.A.R. Labs, Tina told Barry that his metabolism cause him to pass out if he doesn't eat enough. Despite Tina's warning about the metabolism effect, Barry ignored her and went after Pike again as "The Flash". Later, after Pike arrest, Barry went to apologize to Tina for ignoring the warning that almost cost his life and told her that he has faith in her to uncover other sides effects.

Trivia

 * The fact that she would eventually become Barry's wife was hinted by Julio Mendez in.