As you can see there are two "Concept Art" galleries, and a third "Characters" gallery which has a bunch of the exact same pictures as the other two concept art galleries.
This is the original Concept Art gallery, that also has the most pictures: (This one should not be deleted). Original Concept Art gallery
There is also an empty gallery called "Images that are actually totally from other games but can't be removed" with nothing in it that should be deleted. Gallery with nothing in it
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