I guess I'll just explain who my OCs are now. Unfortunately, three of them aren't finished in terms of characterization yet, so their personalities aren't really even worked out all the way yet. They're all pretty much in the planning stages right now (except for the first one)
My pegasus pony OC is a "drifter", a pony that doesn't live in any one place. She just travels the Earth, meeting ponies and getting in adventures along the way. She has a real relaxed, almost hippie-like personality. She also doesn't have her cutie mark despite being in the age range of the mane six
My other pony OC is the deer pony I talked about
My dragon OC is going to be a female, teenage dragon who likes to pretend she's an evil, chaotic monster for the lulz, but in reality is just a harmless prankster that likes to mess with people
My Changeling OC...well, explaining him requires knowledge of my headcanon for the Changelings. I'll probably explain him in another poast