This is why I was proposing the hierarchy. As we know with superheroes, many different people become the same hero.
Batman
↳ Bruce Wayne
↳ Dick Grayson
↳ Jean-Paul Valley/Azrael
↳ James Gordon
↳ Terry Mcginnis
↳ Damian Wayne
↳ Jason Todd
↳ Tim Drake
↳ Thomas Wayne
↳ Jace Fox
↳ Kal-El → Clark Kent
↳ Alfred pennyworth
Nightwing
↳ Dick Grayson
↳ Kal-El → Clark Kent
↳ Jason Todd
↳ Lor Zod → Chris Kent
↳ Kara Zor-L → Karen Starr/Paige Stetler
↳ Cheyenne Freemont
↳ Alphonse Sapienza
↳ Bruce Wayne
↳ Terry Mcginnis
↳ Damian Wayne
In regards to post #11264629:
Supergirl
↳ Kara In-Ze → Kara Kent
Outside of the suit, she's Kara Kent. If she were in the suit, the Kara Kent tag would be removed.
I'm not sure how the tags work on the back end, but if it's possible to link them and have multiple parents for child tags, then that's what I'm saying. As for the costumes, I think the best option is to make them individual General tags instead of linked to the character. Or they could be linked to the character, either option works. Also I don't think it's necessary to designate a "civilian" version of the character since their alter ego is already the civilian version.
