character 단어 관련! 자세한 설명부탁드려요.

여기서 character의 뜻이 어떻게 쓰였는지.알려주세요.
1) She is the main character in the novel.

2) He is a man of character.

3) He writes in Chinese characters.

4) The man is a dangerous character.

5) He has a face without any character.