Querl Dox (Earth-Prime)

Querl Dox, better known as Brainy, is a Coluan vigilante from the 31st century known as Brianiac 5 and a Legionnaire.

Traveling to the 21st century along with his fellow teammates, Querl stayed and joined the Super Friends when his rogue cousin terrorized his home time period. Querl used the name Barney Fife while operating among humans and wore Image Inducers to further conceal his appearance.

After meeting his doppelgängers from the Original Multiverse, Querl realized he must work with Lex Luthor in order to rid Leviathan. He was promoted as the director of the DEO and eventually stepped down as the organization perished.

Early Life
In his early years, Querl had a close relationship with his parents. They once visited a planet, leading to his mother bottling it. In order to prevent Querl from becoming like the his mother, Querl's father placed 3 Personality Inhibitors on Querl's forehead.

Legionnaire: Brainiac 5
"So, you're not worried at all that the last time you time traveled, you missed the mark by 15,000 years? It was 12,000 years."

- Nia and Brainy

In the 31st century, Querl joined the Legion and was nicknamed Brainy by the Legionnaires. They then time travelled to the ancient times and froze themselves until 2018. Due to his cousin's agenda to destroy all Artificial Intelligences across the universe in the future, Querl switched his position in the Legion with Winn Schott and became an agent of DEO as well as a member of the Super Friends.

Relationship with Nia Nal
At some point after joining the team, Querl and Nia began a relationship and was nicknamed "Wildcat" by the latter.

Removing his Inhibitors
Weeks after the Crisis, Brainy and Nia went for a walk by the shore and met another Brainiac 5. Brainy-Prime then approached the alternate Brainy while starting a fight. However, due to their similarities, they were able to fight off each other's tactics as well as finishing each other's sentences. Brainy-Prime then brought his alternate version to the DEO headquarters, only to meet more of his alternate counterparts. As they introduced themselves to each other, an eye patched Brainy fell to the ground and was killed.

The group of Brainiac 5s then brought their deceased counterpart to the med lab. As they discussed their past, they found out that the item that killed "Eye Patch" was the Anti-Life Equation. Once they were able to identify the killer and the attacker of Nia Nal was the shy Brainiac 5, they fought to prevent the latter from opening the Bottle and release his Earth on Earth-Prime. After his Personality Inhibitors were damaged, Brainy was convinced by Nia to remove them to access his true potential. Brainy-Prime was then able to easily defeat his evil counterpart and bring him along with other refugees into the Bottle until they can find a way to safely restore the planet.

After the fight, Brainy talked to his counterparts and they gave him their respective Life Projectors, joining the Big Brain directly as well as allowing Prime to "summon" them for advice. Before the female counterpart of Querl enter the Big Brain, he gave all the information to Brainy-Prime in order to defeat both Leviathan and Lex Luthor.

With all the information, Brainy went to Nia's apartment and broke up with her, allowing him to "understand his emotions and personalities", whilst working with Lex and defeat him from within.

Working with Lex Luthor
Brainy then approached Lex and told him that they should work together in order to defeat Leviathan. Lex then gave a mission to break Toyman out of jail.

Toyman Fiasco
With Toyman in freedom, he attempted to kill Chester Dunholtz. Querl was then tasked by Alex to uncover the identity of Toyman's ally's identity, not knowing it was in fact Querl. The team then arrived at the Tower and Nia used her Oneiric powers to predict the next move. However, Nia dreamt of a Wildcat, a nickname she gave for Brainy. Brainy then continuously asking her, while pressuring her. Despite his attitude, he was caring for the team and approached Lex in order to prevent casualties. Lex refused and Querl started doubting his choices. During the fight, Querl paused when Nia was in danger and Winn was able to deduce Querl's feelings for her. He then discussed with Querl regarding his feelings. Querl then told him the truth and Winn told him that he considered him an old friend while keeping his secret.

After keeping Alex "under control", Querl was able to acquire the Immortality Code for Lex. However, Alex quit the DEO and Querl was then promoted to director by Lex.

Continue with Doubt
After Dreamer (Nia) took down a Dominator, Querl led a group of DEO agents to arrest the Dominator and thanked Nia. However, both attempted to say something to each other before pausing and thanking each other once more. Kara then called Querl after the anti-transgender hate crimes in order for him to track the criminal. Querl then admitted it was terrible, and quickly changed his attitude to continue his lie. Querl later brought files the DEO kept on the transphobic hate group and gave it to the NCPD.

When Querl asked Lex to locate the individuals kidnapped by Leviathan, Lex said he could not as it would threaten himself and his family. Lex then proposed using the Myriad and Querl did the same to Kara, with the latter agreed. However, Lex was in fact attempting to use the opportunity to frame Supergirl and release a Sun-Eater as a distraction. Querl then gave a Lexosuit to Kara for her to safely bring the Sun-Eater back to the Fortress.

Destruction of the DEO
On July 15, 2020, when Querl disobeyed Lex's orders due to him releasing a Sun-Eater and threatening his friends' lives, he worked with the Super Friends and captured Rama Khan. They then interrogated him, only to find out he was purposely captured to acquire the Kryptonite in the headquarters. He then completely demolished the building with the team being able to survive the collapse with minor injuries.

Brainy and Nia then went into an argument as to who Brainy affiliates to. Nia then told him that if he does not choose, she would do it for him, leaving Brainy in the destruction site alone.

Brainy then talked to Lex, only to realize that he was using Rama Khan for the Kryptonite.

Betrayal
With the DEO gone and Lex not giving assistance, Brainy "summoned" his female counterpart at Al's Dive Bar. He then told her that he will Bottle Leviathan. He then successfully defeated them, only to be injured during the fight.

Lex then arrived at Brainy's side, asking him why he did not wait for Supergirl to die. He then told him that Lex should not underestimate himself and told him that he would never let his friends die. However, Lex was able to know about Brainy's plan since the beginning and was not able to predict his suicidal plan. Lex then took the bottle away from Brainy, telling him that he would do the killing of Supergirl himself, while mockingly saluting Brainy and leaving him on the Leviathan Ship.

Moments later, Nia arrived on the ship and attempted to rescue Brainy. Brainy refused as the radiation of the ship is able to kill Nia. However, she did not listen and used astral projection to damage the ship's security system, allowing her to enter. Nia was then collapse on the ground and Brainy was attacked by Gamemnae. The Super Friends then landed on the ship, with M'gann M'orzz brining Alex, Nia and Brainy away from the radiation. Alex Danvers then used the Hand and injected him with a serum, restoring his normal body functions. He then proposed to use the Anti-Life Equation to destroy Gamemnae, with Alex giving Supergirl a microchip and destroying Gamemnae.

No More Secrets
Returning to the Tower, Brainy and the team reunited with Lena. Brainy later gave Nia his Legion Ring for "safekeeping", saying it might come in handy during the fight. He then worked with Lena on activating the Myriad to restore the minds of those under Lex's control. After defeating him, Brainy returned to the Tower's lower levels and reconciled with Nia Nal. Brainy then told her about the reason he worked with Lex and promised her no more secrets.

Operation Vengeance
After Lex Luthor's successful win in the trial, Querl could not control his outrage on Lex Luthor. He later crushed a keyboard and surprised the team.

"We should kill him. We can craft the perfect murder. First, with just the tiniest re-wiring of his home, we can deliver a near-fatal electric blow. He'll be paralyzed but he'll still be aware of what's happening to him. From there, we'll finish him. You choose the method, he's your brother. But just make it slow, okay? After that we'll dismember the body and scatter the pieces across the universe. I know exactly which planets have atmospheres with pressures high enough to decompose carbon in an instant. This time there will be no Lex resurrection."

- Querl's plan to kill Lex

Later, Querl started screaming towards the screen when Lex gave a speech on television. Querl then assisted the team on capturing the Phantom Progenies and proposed to assist on the sub-containment unit. Lena then approached Querl and told him that their original methods of facing emotions, putting them in boxes, was wrong. Querl then broke down in front of her and expressed his hatred on Lex Luthor.

When The Tower was under attack, Querl got the blaster and fought against Phantoms. The blaster then overheated and Querl sought Alex's cover.

Take #2
"Trying to relive the past two days would be catastrophic. There are too many variables. Landing a millisecond later than we originally did would have ramifications we can never account for."

- Querl

Alternate Timeline
In a dystopian timeline, Querl's emotions were deleted and became a member of Lena's army alongside Reign. Querl was able to fight the Super Friends until the timeline was erased when Kara and Mxyzptlk returned to their home timeline and turned off the simulations.

Powers

 * Coluan Physiology: As a Coluan, Querl is able to use his techno-organic powers.
 * Technopathy (Cybernetic Interface): Querl is able to use different technological devices and able to control it by simply touching it. Querl was also shown to short circuit a technological lock by simply touching it.
 * Superhuman Strength: Querl is able to lift and move heavy items. He was also shown to be able to easily destroy a keyboard out of frustration.
 * Flight: Querl was shown to fly when he reconnects to the Big Brain.
 * Superhuman Durability: Despite being in the radioactive cockpit of the Leviathan Ship, Querl was shown to survive the environment for minutes. Querl also claimed to be able to withstand Kryptonian heat vision.
 * Shape-Shifting: Querl has the ability to shift through a contained location, with him shifting through garbage in Oscar.
 * Superhuman Speed: Querl is able to run at an exceptional speed, appearing as a blur to the naked eye.
 * Legion Ring Application: As a former Legionnaire, Querl was given a Legion Ring with multiple functions.
 * Telekinesis: Querl was shown to move the Bottle just by using his mind.
 * Flight: Although it is unknown whether Querl levitates using his Coluan physiology or using the ring, he possesses the ability to fly at a superhuman speed.

Abilities

 * 12th-level Intellect: Querl has a high-level intellect and was able to understand complex concepts such as the Kill Code. However, he is unable to understand Human metaphors and sacarsm. Having this ability, Querl is able to compartmentalize his fear and maintain resistance against Fear Visions. However, he is still able to feel the fears and struggles to overcome them.
 * Master Strategist: Brainy serves as the strategist for the Legion of Super-Heroes, and later the Super Friends, using his exceptional intelligence.
 * Master Engineer: Brainy was able to understand complex engineering concepts and often repairs advanced alien technology.
 * Master Hand-to-Hand Combatant: Querl was able to fight his evil counterpart.

Weaknesses
"Thin sheets of rubber holding in all that pressure, not knowing when to pop, balloon."

- Querl to J'onn on his fears


 * Globophobia: Querl is extremely afraid of balloons and how they will pop at a random point of time.

Former Weaknesses

 * Personality Inhibitors: While wearing the inhibitors, Querl was shown to have less emotions and personality. This affected his ability to connect the the Big Brain as well as showing his true emotions to people.

Current Equipment

 * Image Inducer: Querl wears a image inducer to operate among Humans.
 * Legion Ring: As a former Legionnaire, Querl retains the Legion Ring and is able to use it on several occasions.
 * Brainiac 5 Suit: After reconnecting to the Big Brain, Querl received a purple protective suit by the latter.
 * Life Projectors: After reconnecting the Big Brain and taking to his Pre-Crisis doppelgängers, Querl now has 3 Life Projectors on his suit and can talk to his doppelgängers by "summoning" them.
 * Blaster: Brainy used a blaster while fighting the Phantoms.
 * Illusion Glasses:

Former Equipment
"Ever since I removed my personality inhibitors, I have been overwhelmed by the depth of my emotions. The rage? It's always there. Seeping out, burning me like acid and all I want to do is help you destroy him, Lena. I need to destroy him. And if I can't do that, then how do I make these feelings go away?"

- Querl on his rage


 * Personality Inhibitors: Querl removed the inhibitors after them being briefly damaged during the battle. He then returned to his true form and regained personalities.
 * The Legion Suit: As a former Legionnaire, Querl retains the Legion Suit. It was then replaced by a purple suit created by the Big Brain.

Trivia

 * Brainy was recruited into the glee club, math league and the drama guild in Midvale High in 2009.