I might be in the minority regarding this, but I don’t care all that much about the characters in animations, fanart, etc. The good part about using preestablished characters is that usually a lot of people find them hot, because they’re often designed for mass appeal (though of course there are also characters which I don’t find particularly attractive, for instance), but really any character I find hot would do. What appeals to me is the facial expressions, the shots/angles, the sound design, the voice acting, etc. Any sort of plot one could imagine doesn’t matter to me, unless there’s a continuity within someone’s art or videos, in which case, again, any character would do.