Tbh… people worry a lot about if their character is too plain but like, I think of some of my favorite character (like shigeo from mob psycho or saitama from one punch man) and they’re the most plain characters ever but they’re awesome. I guess story or personality or quirks matter more sometimes.
But if you’re just using it for drawing..
There’s a lot of ways to make it unique! Like.. some ones I can think of.. horns, hair color streak, hair accessories, one accessory that’s a distinctly different color from the rest (or really bizarre/unique), different color eyes, magic powers, a pet or spirit that follows it around, a cool ass weapon, etc etc