Right, so keep “ambiguous character” official, “Schrodinger’s character” as an alias, and do away with “Schrodiner’s Spyro” until and unless it becomes common enough to warrant a separate tag…
About as I would have expected in hindsight.
Incidentally, I do strongly believe unique tags aren’t always bad. If something is rare, sometimes that means it is a highly memorable, and possibly THE most memorable thing about the image.