Nash Wells (UE-33)

Harrison Nash Wells is a doppelgänger of Harrison Wells.

Early life
At some point, Nash travelled to Earth-26 but it was invaded by psychic Starfish, and he had to use a neural splicer in order to stop the invasion.

At some point in 2012, Nash went to Earth-719 in order to find a rock with valuables crystals in it. When returning to his camp, he found a girl who took some of his food after disabling his security drone. The girl introduced herself as Maya and revealed that the rock had a treasure in it. When Nash told her that if her parent ask where the hat came from, she should respond that she earned it. The girl then revealed that she doesn't have any parent anymore. Nash then decided to adopt her.

At some point, Nash encountered the Council of Wells but despite their great intelligence, he considered them as idiot.

At some point in early 2019, Nash and Maya travelled to Earth-13 to retrieve an emitter inside a mountain. This operation was a disaster since Maya felt and died.

Tracking the Monitor
In 2019, Nash traveled to Earth-1 in search of Eternium. He broke into McCulloch Tech in search of it. The next day, Nash continued to track eternium, when he was found by Cisco Ramon and Iris West-Allen. He appeared and pinned Cisco to the wall when he tried to introduce himself. Nash asked why they were following him and pulled out a ruby that could give its victims nightmares. When his gauntlet detected eternium around Iris, he approached her, but she tasered him and they brought him to The Central City Citizen office. When he woke up the two of them tried to befriend him, but he refused and revealed that he win in search of eternium before escaping. Later, in the ally where he met Cisco and Iris, he opened a manhole where eternium is detected.

The next week, Nash has bugged Cisco with to get information such as the Flash's identity. After hearing their conversation about saving Ramsey Rosso life with a cure. Nash appeared a made a deal with Them to "find" a cure for Rosso's life in exchange for an "Anti-vibrational crypto-circuit". Nash led them to McCulloch Tech and inform them about a bio-regenerative that McCulloch Tech stole from the dominators during and "Invasion" years ago. After they broke in, Nash knocked out two guard that almost caught them and led them to the lab. They then investigate the lab, but he and Barry went to investigate a noise and when they come back Cisco inform them that regenerative is not there, and they all escape with a smoke bomb. After being threatened by Cisco, Nash left and went back to the sewers where the crypto circuit projected a hologram of Mar Novu going through a wall. Believing to have find him, Nash start to dig.

Trivia

 * Compared to common doppelgänger of Harrison Wells, he is a geologist instead of a scientist.
 * With him appearing in the crossover, he is the version of Wells that has appeared in the most show in the Arrowverse.