We split this stuff in a parallel tag. So there's, say, a "digimon" tag and a separate "digimon fandom" tag. Anything indirect is tagged as, say "[Miles prowers body pillow](https://cutepa.ws/images/2087)", "[kumamon cosplay](/images/10725)", "Toothless hoodie", "[101 dalmatians shirt](/images/10391)" etc. and all of these feeds into the relevant parallel copyright tags (or possibly even a separate tag category, depending on what Pup decides).
So if you search for just "toothless", you find only pics with the character toothless present and posing/interacting. But "toothless*" would find "secondary" presences, like someone drawing an image of toothless, wearing a cosplay of him, a poster of him of the wall etc.
This is a proposal, but I think it's worth considering while we still have a relatively restrained amount of content.