I can’t think of a fleshed out character that isn’t abnormal, due to the scifi/fantasy angle. But it’s under some assumptions and extrapolations.
For example, my whole family dreams events before they happen…well, I don’t know about my kids, yet. Time will tell, there. It’s not a controllable “ability”…
To the point where I’m not sure that calling it an ability is right.
But it does mark that abnormal humans exist.
And sometimes abnormal skews into weird areas. For example: ADHD isn’t known for easily understanding emotional interaction, sometimes being called “developmentally delayed”, over the years. It’s not severe, but it’s funny how there are times where I don’t get interaction, and then suddenly I get uncannily accurate.
A really small thing, where I can’t even remember what happened, just what I told another kid: I was 16, on a church trip, and I told some 12 year old that: a. He was wrong (and the kid was brilliant so he wouldn’t automatically agree with it), b. Point blank, in the near future he’d understand that I was right, c. He’d come to me and tell me so, d. And I wouldn’t remember the conversation, and finally, e. He’d be pissed that it worked out like that, where I didn’t even remember.
Less than a week later, he told it all back to me. I’m confused because I don’t remember the conversation, but I did ask him: “well, does it make you mad?”
“Yes!”
So, I laughed.
In a lot of spiritual circles, this is called a “spirit of discernment”. I was struggling back then, with interaction. I still do, to this day, on occasion: way better about it now, or writing would be hell. But since I’m much older, have seen a lot and every once in a while get pretty uncanny.
So: “Humans can’t do that!”
I already do weird freaky stuff. Why can’t a rare human do this thing? Just because you have been conventional doesn’t mean the rest of humanity is.
So, I have a dowsing human (one who doesn’t use rods, but the whole of themselves and their minds to find people). My husband has dowsed before, as has his coworkers (with wires in their hands) for pipelines they needed to find (that arent marked on any map). Normally, old folks would do that just to find a place to put a well, for underground streams. My husband and his coworkers are using that to find natural gas pipelines. It’s not frequently done, they rely on more scientific methods when they can (tracer wire with a machine that puts out a pulse that another box read), that one is used for more often.
That ain’t a trick I want to pick up.
