RWBY Resurrection: Grimm Wars, The Summer Wars.

Summer Rose did not die, she was kidnapped by Atlas and used as. template to create perfect clone soldiers with silver eyes capable of wiping out the overbearing Geimm threat.

it did not work. no matter what they did, or how hard they tried, the clones did not have silver eyes, and did not carry over Summer's semblance, but instead the eyes came out in random colors. many other defects were found such as a few being Albino or being born blind. the project was a failure in all ways except a few.

one, the clones had youthful bodies that didnt wear down as easily.

two, they had a natural aptitude for combat.

and three, they were still able to develop unique semblances.

SRC 16100-e31, called Nue by her fellow clones, is just as defective as the rest of them but has one major difference. she asks questions. and Atlas doesn't like questions.