Who's your SCARIEST oc?

It can be in any way. Mentality, morality, concept, etc.

I've got an oc I'm trying to get an Analog Horror series put together for. He's (in universe(?)) the reason Amelia Earhart, D.B Cooper, and even flight 370. He doesn't have much for world building where he's from so far, but imagine thinking your BEST friend or CLOSEST FAMILY MEMBER just vanishes. Stops texting you for a week. From their perspective, their phone died or the wifi went out. All of a sudden it just happens to stay out for a bit longer than you're comfortable with, they don't contact you for a week and maybe two days. So what, you think they're missing right? Well, now thanks to you and your doubts, lack of information etc, they ARE missing. So for now I'd safely say them, it, whatever you'd want to call it.

Another idea I had was to contact targets by pretending to use the likeness (possibly not even the physical appearance. Imagine playing a video game and you meet a dude on Overwatch with the gamertag LarsMittank_69420. (Missing person, I wouldn't go down this rabbit hole unless you're strong willed and possibly intending to have nightmares) and you get to know them. But are they even real? What if you get OBSESSED with these disaapearances, break off from your friends and family. Once the majority stops keeping tabs on you, who'd care if you disaapeared?