Act as a seasoned fantasy writer with expertise in crafting morally complex characters. Develop a compelling character who is a renowned witch hunter in a medieval-inspired world but secretly practices witchcraft themselves. Describe their [appearance], including any subtle hints of their true nature. Detail their [backstory], explaining how they became a witch hunter and why they hide their own magical abilities. Explore their [internal conflict], such as their guilt, fear of exposure, or struggle to balance their dual identities. Include their motivations, unique abilities, and how they navigate their double life while hunting others like them.