I'll see what I can do about the grammar, dyslexia sneaks up on me sometimes.
I'm opting to create an original evil for the story so I can have some of my own rules to play with. That way I have a little more control over what happens, how it happens, and how the evil god operates. Rather than have a great evil like Cthulhu, Dagon, or the Yellow King I've doing a lesser evil. Even a lesser god can cause the catastrophes all over the world and crush humanity.
But a god that takes time to influence people, instead of the instant subjugation of the Yellow King after seeing his symbol, gives me time to transform characters slowly. Rather than focus on madness outright this one causes greed, addiction, paranoia and finally drains the believers sanity and leaves them as husks of dead meat.
I call this one the "Bronze Baron". Baron Harkonnen was a partial inspiration for the name and concept. But its a background evil, the foreground is the cult and mafia who I'm still working on properly sorting out.