Ownership rights, or whether it is permissible to use other people's models.

Please address me informally; I'm not a high-ranking official, and I'm not old enough to warrant formal address. Ment, It's not always possible to find the author of a model or mod. I decided to simply indicate the name of the mod, for example: Castle, Conflux, and Sanctuary (only in English). I feel a bit awkward asking for permission, especially since I have no idea if I'll be able to do anything with it. It feels awkward to search and then bother people with such trivial matters. psatkha, Of course, the mod is not for commercial use. Otherwise, I would be punished for using original models from Heroes. Unfortunately, I haven't reached the level of skill to create animations yet, so I'm using local, Lords of the Rings-style animations for the models. Thank you for the quick response. PS: Could you please suggest an emblem for the Conflux faction? I'll change the Fortress one; I already have an idea.