1. Kakashi: Naruto's teacher Kakashi has played a crucial role in his growth. Many fans are curious about Kakashi's face, and Naruto even imagines what he might look like, including crooked teeth. When Kakashi's true face is finally revealed, it doesn't come as a surprise, as there were previous hints.
2. Anko: Anko was always mysterious, often covering her face with a hat and high-collared clothes.
3. Kankuro: Unlike others who used masks or high collars, Kankuro used face paint to conceal his face. Before washing it off, he appeared beaten up and arrogant. However, as an adult, he matured and changed his bad habits.
4. Kakuzu: Kakuzu, a member of the Akatsuki, had a unique way of living by using other people's hearts. Despite his body not being able to regenerate anymore, he used special threads to sew himself up. Without the stitches, Kakuzu turns out to be quite good-looking.