Author

An author is someone who originates or gives existence to something or writes something.

Some authors are universally recognized as being good. An example would be J.R.R. Tolkien.

Other authors are usually called bad, like Christopher Paolini.

It's up to the author what they write, but authors of fanfiction should be advised to obey the canon. Not doing so will very likely result in the fic being PPCd, MSTd, or sporked in general.

Many authors of fanfiction are also Suethors.