Depending on what kind of writing you do, it makes sense to use a pen name.
I personally can’t, because doing so would only perpetuate mental health stigma. It took me a while to figure it out because I was so deeply uncomfortable with opening up but I’ve gotten over it by now. Needs must and secrecy is no way to live. Besides, there’s no shame in being sick, whether it’s broken bones or a broken brain.
Your weirdos sound scary, especially the dude. To be on the safe side, I’d have filed a police report but that’s just me.
Lastly, cool pen name: Daforge sounds tellement chic et français! (But I’m biased.)