From noticeable Waves to full blown curls that can’t be tamed (which unfortunately there are very few in the anime i’ve watched) and everything in between! Also i’ll stick to main characters for the most part!
Note: I am well aware there is a difference between wavy and curly. My mistake for not specifying the wavy aspect in the title. This list is (very) limited to the anime i’ve personally watched and clearly very few of these characters have beautiful natural curls. I won’t argue that one bit. If you have any animes where a character or multiple characters have naturally curly hair feel free the suggest them and i’ll be happy to check them out!