ngl my answers has always been Cecil and while that doesn't exactly change here... I have to say that I tend to shift my focus from one oc(s) to another and it also applies to my favorites. lol
Following that, my current fav would be Fihryn since I've been working on him lately and fleshing his backstory out which made me appreciate him way more!

As for the second question; I do! I have quite a bit: Cecil, Alabaster, Șahim, Elisyil's ex-gf, Viadel aaand I'm sure a few more could be picked out from the crowd somewhere. Just these are the ones that could come to me from the top of my head.