More to explore:
Zak and I are both Lupin. I call bunk on INFJ being the rarest type. Mrs. Bishop is one too.
That makes four people I know, besides me, who are INFJs, so I'd have to agree with you.
Really, the test should say that INFJs are the type most likely to remember their result after having taken the test. ;)
Harry Potter MBTI Chart.
The kids of Harry Potter would be able to get out of anything
After Harry Potter
Harry Potter Anime