There is no such thing as a "defamation character." Defamation is a legal term that refers to the act of harming someone's reputation through false and damaging statements.
It's possible you're asking about a character in a story or fictional work who is defamed. If so, the term "defamation" wouldn't be used in that context. Instead, you might describe the character as being:
- Slandered: This refers to spoken defamation, often through rumors or gossip.
- Libelled: This refers to written defamation, such as in a newspaper article or online post.
- Vilified: This means to speak or write about someone in a very harsh and abusive way.
It's important to remember that defamation is a serious legal matter and should not be taken lightly.