Should I use "meet" or "know" when referring to a fictional character?

My native language is Portuguese, but I can understand a lot of English, especially when reading or listening to something. However, sometimes, I get stuck on a few things when writing.

When referring to a fictional character, should I use "meet" or "know"?

Marcus Kane is one of the most touching characters I’ve ever been
lucky enough to meet/know and certainly one of Ian’s best works.

Thank you!