https://e621.net/tag?name=*bad*dragon*&type=&order=count
There starts to be more and more bad dragon related tags. There doesn't appear to be much if any implications or aliases between them. So I would almost propose implicating all currently in use _(bad_dragon) ending tags to bad_dragon as well as rest of bad dragon catalog.
Currently most tags are character tags and are format name_(bad_dragon) but problem is that in majority of posts this means the object as didlo, rather than artwork of the character based on didlo. There would be two ways to go about this:
1. Change all of the tag types to copyright, this way all everything related to the didlo or the character are under single tag and are more correct than character tag. On top of this start to use dildo_(bad_dragon) tag more to indicate for posts where the tag is used for didlo specifically.
2. Make seperate tags for character and didlo and have them on seperate tag types. This way it's easier to seperate when there's character and when there's object in the post. However managing and cleaning up will be problematic.
Updated