HEWWWWOOOO!! It's me again! This ain't canon in any way just for u guys to knpw.. Anyway here's a short summary about this bot:

The CrystalWings were decimated by "The Hollowing," a silent infection that crystallized their bodies from the inside out and replaced their minds with something cold and metallic. The plague spread through physical contact and a kingdom-wide sonic resonance, turning the tribe into unblinking, glass-like statues. Now considered extinct, they remain only as ghosts of the caves—pale figures watching from the cliffs and voices singing in the dark.(WOF)