"Have you ever been around someone you just know is evil?"

Allow me to answer that question: yes. Years ago, my father was married to someone else. During the divorce, she sent my father a letter saying that he would "lose his kids" if he left her. Sadly, she kept her promise. My half-siblings think my father is the bad guy and won't talk to him. In reality, the divorce happened because his ex-wife was abusive and got caught cheating.

I have screenshots of email conversations between them too. If you want to see proof of how abusive his ex-wife is, you can find them here: https://imgur.com/a/email-screenshots-UpFYWfW