I know who he is! I yelled his name and his squared custome blushed, like if he would beg not to continue or reveal. I would do it again i'm the most upcoming tournament i'm Mex
Who is Rey Enigma ?

There are some people that we can rule out based upon body-type and height, but nobody has definitively pinned it on anyone. It can be anyone with sort of a medium build who is probably in their 20s or 30s, who is at least FM strength, and who is fluent in Spanish, though not necessarily from Spain.
I suppose if someone really wanted to, they could create a list of possible players, start crossing off people based upon physical characteristics, then go through the person's games comparing repertoires, and then narrow it down to a handful of people.... but ain't nobody got time for that.
He has a native Spanish accent from Spain, but Anna Cramling also has a perfect native Spanish accent and she does not live in Spain.

Idk but his voice is soooo annoying. Like he's using helium balloons or something
Obviously he's not Magnus judging by his typical locations and opponents

ChatGPT said that Rey Enigma is a professional wrestler:
”Rey Enigma is a character from the world of professional wrestling, often portrayed as a mysterious luchador. His real identity is typically kept secret as part of his character's persona, which adds to the intrigue and mystique surrounding him. In many cases, luchadors in wrestling maintain their anonymity to enhance their character's allure and keep fans guessing. If Rey Enigma has been revealed or discussed in specific storylines, those details might vary depending on the promotion or narrative.”
No, he's not a Grandmaster.
He's an IM from Spain. I don't remember his name, but someone discovered his identity a few years ago, as one of his web presences had a copyright page with his name on it, in the fine print.
Soon afterward, his name was removed from that site.
Anyway, he's around 2400 FIDE. Not a GM, but certainly a strong player.
https://ratings.fide.com/profile/2209748