Square Enix explained the meaning behind wings on characters from FFVII. The wing placement highlights the distinct origins and the color signifies the right or wrong path the character took. : u/xeznaff

Wing (term), Final Fantasy Wiki

One-Winged Angel Appearance Set for Sephiroth

Final Fantasy VII Remake: Picturing the Past

Wing (term), Final Fantasy Wiki

Final Fantasy 7 Remake: Purple & Yellow Color Meanings Theory

How Did Sephiroth Become A One-Winged Angel?

Final Fantasy 7 Remake: Purple & Yellow Color Meanings Theory

Final Fantasy VII Original - How does it hold up? - Discussion

Final Fantasy 7 Remake: Purple & Yellow Color Meanings Theory

Crisis Core FFVII Sephiroth, Genesis, Angeal Wing Symbolism Explained

Wing (term), Final Fantasy Wiki