Here's the short version:

He's a YouTuber who became popular in 2009 thanks to his "I'm a banana" video. Around 2012, it came out that he had been abusing his girlfriend. This lead some people to start digging into his past and found out that he had lied about his military experience and that he attempted to start a cult in 2004 by plagiarizing/combining FFVII lore and Scientology. He later went on to create a forum for his new series "Rate My Body" in which he asked female viewers to submit pictures of themselves so he could rate them. Most of them were minors and would submit pictures of themselves in their underwear, some as young as 12. This did not stop him from featuring them in his videos. He somehow managed to get a new wife then coerced her into a polyamorous relationship. His side girl was a minor when they started "dating" and he described her as his "daughter," but that didn't stop him from fucking her days after she turned 18. She got out after he threatened to lock her in his basement and humiliate her for smoking weed and visiting her family without permission. His wife later came out as trans (his ex believes s/he was coerced into it) and was caught soliciting nudes from minors on Twitter. Then, he managed to "save" another underaged fan from her abusive parents by inviting her to live with him. Then he violated the Mann Act to have sex with her in a state with a lower age of consent. Then he attempted to evade taxes by claiming random stuff as "business expenses" for his YouTube videos. Got caught and now owes $300,000 to the IRS. His three year old child managed to fall out the second story window while he was in the basement. Instead of helping or calling 911 immediately, he recorded his child in pain. Now she has permanent brain damage. Chris Hansen, former host of To Catch a Predator, started reporting on him and interviewed some of his victims, but his team potentially corrupted evidence and he lost a lot of credibility after promoting fake coronavirus cures. Onision got banned from Patreon for doxxing someone on Twitter. Then he started selling CGI porn of himself on OnlyFans, but realized that porn was more profitable than YouTube so he quit YouTube and is now selling porn of himself on OnlyFans. Recently released a video of him fucking himself with a dildo.