iTsunayoshi Sawada
My KHR OC was meant for roleplaying purposes, actually. That's why I created her. But I have done one piece of writing involving her spending a day running errands with Tsuna. It wasn't anything romantic, and I don't really remember it much now.
And I've had no desire to write anything AoEx related involving an OC with any of my favorite characters. I do have my fantasies but those will remain known only to me for good reasons. Reminds me, I was looking through DA the other day and browsing the favourites of a friend of mine, and there were a few OC / Amaimon arts in her faves. Made me twitch, they were so badly drawn and Amaimon was so moe-moe-sparkly-desu OOC.
Makes me sick just to think about it, really...
I dunno though, I tend to be really, really sensitive and touchy when it comes to what I see involving my favorite characters. The past few nights I've seen a few images of Amaimon being tortured and raped by Mephisto and it's irked me enough to lose sleep. Kind of pathetic I guess, that I'm so attached to fictional characters to the point where something like that would bug me so much... But whatever, I'm not ashamed of it. I've made some OCs to be secondary characters in a couple fanfics I did, mostly as a way to keep the plot moving and coherent. it was for Slayers fanfiction, after all, and with a cast of canon characters THAT eccentric even the canon material often tosses in side characters to keep them on track on occasion. and I have done some OCs for RPs back when I was roleplaying a lot, but I always took in mind the series they were for, what kind of storyline the people running it were setting up, and then created them with the care I'd create a character for one of my original works. and I've never created one for the sole purpose of setting them up with any other character, canon or not (altho there was one from a Slayers RP that wound up in a slightly dysfunctional relationship with another OC that started out on the opposite side, neither that character's player or I really knew how it turned out that way, either, it was kind of amusing, especially when we had goof off chat RP sessions when we couldn't get everyone together and had our characters do stuff like play Truth or Dare).
but really, the only OOC stuff I've ever done was for non-series RPs and the occasional gagfic. there's a time and a place for OOC, especially if it's something you're going to let anyone who wants to see it see it.
and I swear, I do get over obsesses and protective over some characters on occasion myself. there was one series of novels I read where the last in that trilogy (which took place after several other works by the same author) where I wound up sobbing because of what happened to some of the characters (some died and some were otherwise harmed by the events, including one character introduced in the previous trilogy getting his face horribly burned and the likable main character in that one getting blinded). I was depressed for a good two or three days and I still get all teary when I read that part.