I'm thinking a bit about the "Author" Nick Carter.
Nick Carter is not the author. There are many authors of the Nick Carter books.
I've started searching for the real authors, but there is no real list about them. Who wrote which book.
Is it any idea to continue the search, or just let Nick stay as the author.
You are right Ulf, Nick Carter is the character & series title with a variety of authors, we might need to put the Question to the mods for the best way of linking these books together, of which there is probably a lot!
Nick Carter isn't the only example of this of course. I think there are online sources that identify the authors of each novel (at least the modern Spymaster series), so that would be a case of listing Nick Carter as a pseudonym. I don't think the system allows "No author listed" with "Nick Carter" under Pen Name. All that said, are these books actually promoted/categorized as being supposedly written by "Nick Carter"? If not, it might be a case of "No author listed" applying anyway. I know some Carter Spymaster books are written in first person, but many aren't.