Board Thread:General Discussion/@comment-26221691-20160410052349/@comment-30333252-20160419081204

That's good. In fact, we can list the origin as the author's fanfic, eg:

Summary: ...(description)...

(last line of summary) This is a fanfiction version of the character, written by Kenchi618.

...(other page details)...

Name: Naruto Uzumaki

Origin: Naruto (FanFiction) - The Sealed Kunai (author: Kenchi618)

...(rest of the page)...

To avoid possible bad blood, it would be best to inform the author when creating a profile via a review.