...Please have the decency to at least TELL me about it. I mean, I'm flattered, but if I don't even know that whatever you drew/wrote/whatever EXISTS, I can't very well enjoy or thank you for it.
Also, it kinda pisses me off when people use MY characterizations of NPCs (which are pretty damn distinctive) and don't bother to credit me at all as inspiration. Yes, I know that ~technically~ all NPCs belong to Bethesda, but my characterizations and deep personalities belong to me and I've done a LOT of work on them. Some of them are for all intents and purposes exactly the same as OCs except that for immersion purposes I've grabbed a name and location of some unimportant background character who does little besides take up space on the screen. It really hurts to see other people just take my blood and tears and hard work and run off without so much as a word, then give the 'technically this is legal and I can do whatever I want and I don't have to credit you' excuse when I discover it (often YEARS later).
It's more a matter of ethics than legality. Taking credit for someone else's work is an asshole thing to do. Just give credit where it's due and all will be as it should.
Similarly, if you're going to use my headcanon, locations, and events, that's fabulous, but once again I've put a TON of work into this and I'd really appreciate it if you had the decency not to take full credit for the ideas yourself without so much as acknowledging my existence.
In the past I've had people illustrate detailed scenes from my stories that they never tell me about. I find them on obscure sites and the descriptions are almost always in Russian, so I have to break out Google translate (or my secret weapon Lyubov) to tell me what they've written. Usually when caught the response is "Sorry, I don't speak very good English so I am uncomfortable talking to native speakers." I wonder sometimes if there is Russian language fanfic of my fanfic floating around out there in cyberspace that I will never know about. Ah well. The mysteries of life elude us.
This has been happening on and off since I started writing over 8 years ago. I'm always kind of shocked when I discover it. I let (and even encourage) friends to use my characters and characterizations all the time. I'll let you too. It really cheers me up that people like my work. Most of the time the only things I get from it are silence and criticism. All you have to do is write something along the lines of "this is based on Arachnia's version of Tel Mora" or "this is based on Arachnia's version of Tiram Gadar." Or whatever. Then TELL ME ABOUT IT so I can check it out, because I'd really love to do so.