(Shin-Ah has very few lines because he is the silent-type, but he is still a very important character!) Not many examples I could find, but he is soft-spoken and stoic in his voice. 

Growing up in complete isolation, he has almost no social skills whatsoever. He is very quiet and hardly ever speaks, usually replying to questions with nods and gestures, or just blank, awkward stares. Because of this, he is often misunderstood by other people, thinking he is suspicious and even frightening. However, he has an extremely kind and caring personality, even towards those in his village who hate and fear him. He deeply cares for Yona and the rest of the group, and has a unique bond with a squirrel that he named Ao. He also absolutely hates the cold, often using his fur head-piece to keep himself warm.