MarioMario456's real name is
Gabriel Alejandro Brito Rojas. Here's the most recent known photo of him.
He was born on January 12, 2007, meaning that he's 17 now, was 13 upon joining ED, and was 14 upon being given sysop (we were not aware of his age at the time). He is actually diagnosed with Aspergers and there are multiple tweets from his mom where she talks about how autistic he was growing up.
Gabriel has been getting banned from wikis since he was only 8 years old. The first wiki he was banned from was Logopedia (a Wikia about logos), where he was banned for edit warring, impersonating an admin and page blanking. His immediate response to this ban was to go crying to his mom, who then contacted the admin who banned him via Twitter. The exchange between them is golden:
Mom: Hi, my english is not good but I really need talk to you about my son. He`s 8 and has autism. He was blocked for you in logoped
Admin: If he's 8 then it's against the Wikia Terms of Use for him to be editing the wiki. Minimum age is 13. Sorry.
Mom: ooh I don`t knew it. Thanks for answer.
Mom: he is crying now. I don´t understand anything about logopedia, but he really loves it. He wants to apologize with you
He then joined Super Mario Wiki under his now-infamous MarioMario456 username and the first thing he did was to put "
Age: 13" on his user page because of what the Logopedia admin told his mom. He then immediately started breaking the rules and responded to the admins and senior users telling him about the rules by blatantly flaming them, including calling one of them a "
dumbass" (I'd like to point out that he was still only 9 at this time).
The next year he joined The Cutting Room Floor and quickly began pissing off the admins there as well. the source of a lot of this drama was Gabe's autistic hatred of .jpg files. A lot of his actions on both SMW and TCRF were attempting to compress .png files and taking already uploaded .jpg files, converting them to .png and then reuploading them (yes, this is retarded beyond words). He also had a habit of editing images that were used on high-use templates, which the admins also weren't fond of.
In 2019 he joined reddit and the subjects he engaged in discussions about were Undertale, Yandere Simulator, and Friday Night Funkin' (it should be noted that once he moved on from one of these topics, he never talked about it again and entirely focused his attention on the next topic - a classic sign of ADHD and autism).
Around 2020 he joined Miraheze and got involved with the "
Reception Wikis", which was where a lot of his known drama happened. He ended up as an admin on the "
Qualitipedia" network. During his time on here he made multiple attempts to steal Wikia wikis from their owners by setting up a "
Miraheze version" of these wikis, going to the Wikia, and asking the admins for a database dump under the guise of wanting to help them move to Miraheze. One of the wikis he unsuccessfully targeted was Alternative History Wiki, here's some of the crap that he did on there (keep in mind that this was literally the first thing he posted on this wiki):
https://althistory.fandom.com/f/p/4400000000000095272
https://althistory.fandom.com/wiki/User_talk:NuclearVacuum?oldid=1829029
Eventually he ended up doxing another user on Miraheze and then moved to ED with some of his friends (most notably Glitchedblood). He was given sysop on ED after half a year or so because he was one of the few active editors on there at the time and the crats who promoted him were unaware that he was only 14. He actually lost his sysop status after a few months because he was a shitty sysop who constantly locked user pages and had the temperament of an autistic 14-year-old. For some reason, he was eventually given back sysop status around early 2022.
He had most likely been using MediaWiki's export function to save pages from ED.online for months or possibly years before the site finally went down. He was seemingly biding his time and waiting for .online to go down so he could slap all of his XML backups onto an old ED backup from Archive.org and bring the site back under his ownership.
I've got more info on him, but these are some of the funniest parts.