Singularity

The one with a single eye, nostril, jaw, ear, hand, leg, wing.  It is powered by magic which it controls very precisely by drawing arcane symbols on its wing membrane. Later it unleashes the spell by flapping its wing, a technique that was originally developed by him but adopted by many winged warriors afterward.

Its followers are notorious for removing any symmetrical organs and body parts, and to forcibly "convert" others.