Her name is Seraph, she's the synthesized creation of Angeal, Genesis, and Sephiroth, she was made by Hojo. She also has like really bad degradation and isn't supposed to live that long. I don't have a lot of lore other than that.
She's the first synthesized soldier but there's a lot of other synthesized people in my little au thing. Maybe I'll do a thing for them a different time. This is a re-post idk Space for wingies