Querl Dox (UE-37)

"You sir! Are the larcenist and pretender! How did you accomplish this ruse?"

- Brainiac 5 to his doppelgänger

Brainiac 5 also know as Barney Fife is a doppelgänger of Querl Dox that survived the Crisis.

Early life
At some point, he started to work with the DEO and came to know Director Danvers.

Crisis On Infinite Earths
During the Crisis, he went to Al's Bar and unknowingly came through a wormhole that led him to Earth-Prime.

Stranded on Earth-Prime
When Barney was a buying something at a smoothie cart he met a look-alike who he believed was trying to impersonate him. Barney made a "Citizen Arrest" at the same time as the look-alike and brought him/was brought to the DEO. Director Danvers was confused since he can't recognize her Brainiac but the situation escalated to the point where they were multiple Brainiac 5 inside the DEO and one of them died stating to not "let him open the bottle". He along with the other Brainiacs discovered that the dead Brainiac was killed by an anti-life equation and that his Earth was destroyed. When the Emo Brainiac 5 sufered from the anti-life equation symptom, Barney saved his life when he noticed that his Earth-Prime doppelgänger didn't know what to do. Later, when the Emo Brainiac was sent back to his Earth, he and the female Brainiac decided to enter the Big Brain in order to be in peace after the destruction of their world.

Trivia

 * In the script he was refereed as "Earnest Brainy".
 * The alias he took "Barney Fife" is based on Don Knotts' famous character from The Andy Griffith Show.