Saw a post from roachmoth about Transformers Shattered Glass but Megaman and that really inspired me, so I went and did that for Megaman Zero.
Ciel is the shadow leader of Neo Arcadia, who created Copy X as a puppet leader after the original X disappeared. She was genetically engineered as a successor to the creator of the Mother Elf and currently aims to solve the Energy Crisis. Her Ciel System can generate renewable energy using Reploid DNA Souls at a cost to the Reploids themselves. Due to how she was raised, she has little empathy and holds heavily to her perceived purpose as someone meant to be better and smarter than anyone else. This also causes her great frustration when someone questions her actions.
Weil is the last survivor of the Elf Wars. He wished to stop X's newly founded Neo Arcadia using the Mother Elf to subjugate all Reploids, but in doing so he kicked off the Elf Wars. To fight the war he used Zero's original body as a basis for Omega in order to create a reploid that could stand up to X. While X's plans were thwarted with the corruption of the Dark Elf, Omega was ultimately defeated, leaving Weil to exile himself or die. He now wanders the wasteland, replacing his body with machinery to continue surviving, slowly gathering allies in others who fled Neo Arcadia to survive. While he appears outwardly jovial, behind that he hides a grim side, harboring a lot of anger and regret over the lives lost to the Elf Wars.