my main MLP OC's are brother and sister. If in the sense that they are the gender identity that they'd be 'expected' to be, then yes, they match me.
Basically, they each represent about half of my personality.
But only the female is fleshed-out.
I primarily associate with her as she's all of my "good"elements.
I also have a side OC, but he's truly just an avatar for one of my more prominent usernames. He does represent my roleplay character on the site that name originated, but that rp is closed.
Think that's everything, to be honest, I'm just not alright at the moment.