You know that thing that happens when you tell someone you spend a lot of time on the internet and they look at you like you're some kind of weirdo? Look at yourself right now; you're probably making that face at this guy.
If "Weird Satanist Guy" looks familiar to you, it's probably because you've seen him before as "Weird Gamer Guy" or perhaps "Weird Comic Con Guy," also known as Onyx the Fortuitous.