Jei B is the persona of the person of the same name.

About

He was originally created as "JBlock", based on the then-current JBMC logo. He served as the company's in-universe mascot for a time, before ultimately being retired from that role and being given a proper humanoid design to serve the sole purpose of being a persona character, directly representing his creator. His current name is derived from the OC of the same name, which previously served the secondary role of persona but was ultimately dropped from that position due to having "too much lore attached".