Brainy

Carl Dox, more commonly known by his nickname 'Brainy ', lives in National City. He's the best friend of Mon-El.

He is a member of the National City Crew and a main character in there's an art to life's distractions.

Prior to the Series
At some point, Brainy has met Mike and become best friends with him. It is unclear if he met the National City Crew before or after that, but he has become a firm member of them as well. He is particularly close to Nia Nal, on whom he has developed a crush.

in the middle of the night, in my dreams
Brainy has presumably been present to Bar Allen hanging out at Al's Dive Bar when they visited National City in Spring 2018.

worked too damn hard for this
When Linda Park and Bar visited National City in June 2018, Brainy has met them both. He has also been introduced to the Groupchat and attended National City Pride with the two and the National City Crew.

Trivia

 * Brainy solely uses actual punctuation.