Hmm... If I had to classify Mione, I'd pin her as an INFJ, because she is just so damn emotional, isn't she?
You bet she is! In her interactions with others, she's ALL about emotions! Even when she's reciting stuff, it's always because of some emotion prompting her, whether it's helping Harry and Ron with something, or wanting to be appreciated by a teacher, or wanting to put someone in their place, or whatever, it's *always* emotional at the basis.
Harry, I would like to believe, is INFP. He's definitely not devoid of analytical or theorizing ability, as some would say.
How does that argue in favour of his being INFP

? T is the weakest function for INPs. And it sure shows in Harry, if you ask me
Plus, there's the high likelihood that JKR herself is an IN, most likely an INFJ. I think most writers create a main character very similar to themselves. I'm not ruling out ISFP for Harry's type (or even JKR's type), but I wonder how likely it is that an ISFP would think up such a complex other world, and (with the P) be able to roll out so many books and interviews and yadda yadda in the timespan JKR did. She didn't leave a rock unturned or a single thing undone, which I think is most unlikely for an ISFP (even with the practicality that being an S lends).
Actually, I totally see both JKR and Harry as ISFP.
For example, JKR DID leave quite a LOT of rocks unturned!! Just go on any big fan site that allows negative critics and you'll find entire lists of plot threads she started but never ended (SPEW and more generally the House-Elves enslavement subplot, for example), or things she once said that never turned up ("someone will perform magic quite late in life"), and so on. The last book is the epitome of practicality: "I've gotta turn up that last book before that deadline, so damn the details and the consistency!"
As for imagining a complex other world: she didn't actually imagine that much. I'm not saying the whole Wizarding World isn't a "tour de force", but once she got that basis down, she mainly picked stuff from legends all over Europe and re-arranged them in her own way.
And most importantly: both she and Harry REEK of DomFi

! JKR couldn't be more DomFi than she is: "I decide what is good and what is bad, and anyone who doesn't agree be damned!" Her series contain quite a few people that are presented to us as BAAAAD simply because SHE sees them that way because they don't share her values! "Order of the Phoenix" contains two highly visible such characters: Marrietta Edgecombe and Zacharias Smith. Both are fatally guilty of not taking Harry's word on the return of Lord Voldemort. Oooooh, BAAAAAD!!! Marietta, who, let's not forget, didn't even WANT to be a part of the DA and was forced by Cho to come and then TRICKED by Hermione into being loyal to it, then commits the Unforgiveable Crime of doing what SHE thinks is right! And for that, she deserves to be disfigured for years... If that's not DomFi, I don't know what it is! Even good ol' Seamus gets cast as a villain in that book because, figure that, he actually dared defending his mom's honor! He didn't even say he agreed with her, no, instead he was asking Harry to please tell him more so he could make his own mind up. But no, not believing Harry is an Unforgiveable Crime, so there you go, Seamus! And speaking of Unforgiveables: it sure looks as though the Unforgiveable Curses are not so Unforgiveable when it's darling Harry who uses them... Anyone can say DomFi

?
So: Harry and JKR are most definitely both DomFi. And with their utter inability to even start considering that other people might think differently than they do (whether it's Harry not understanding and not caring WHY others contradict him, or JKR publicly wondering why anyone would like Snape or Draco Malfoy or want to be in Slytherin), they just can't be INFPs. But ISFPs? Oh yeah, totally!!
Dumbledore is very wise and very multi-faceted. Being so damn old, it's kind of hard to pin him under your thumb. I really couldn't even guess. I do think he's rather N, but other than that...
Old, manipulative and secretive. I agree that he's clearly N, but that anything more isn't easy to pin down.
Luna Lovegood! I love her. She's probably INxP. INFP seems more likely, since her theories seem so out there. Are they based on anything? I can't remember.
I agree with Luna as INFP. And I LOVE her
Nadir said:
Ron Weasley is hard to pin down. Let's see... fun-loving personality, general prattiness, loud, but not much else. Potentially quite a jealous fellow, though loyal too, in the end. Likes Quidditch, likes chess. Kinda oblivious to the feelings of the people around himself. Feels awkward when it's time to comfort or soothe. ESXP? Biggest detriment to this would be the Yule Ball. Perhaps a shy extrovert.
Shy and awkward, yes. Could be indicative of AuxFi, no? Intense feelings, but he doesn't really know how to express them. That would make him an ESFP.
Hermione Granger being INFJ is probable. I must conclude, however, that she behaves somewhat more like the few ISJs I know. ISFJ perhaps, ISTJs would be rather apathetic to the whole storyline, but that too is possible.
As I said, I suspect that her parents are both STs. We don't see much of them, but the little we do see tells us quite a bit already. They prize academic work, even letting their daughter whom they haven't seen in more than an entire year skip on a family vacation under the pretext that she's going to be studying at Hogwarts. They prize independence in their daughter. They are not very sociable, allowing themselves to be herded around by Arthur, or shunted in the background altogether. They are utterly *reasonable*, sending sugar-free candy to teenagers. And of course, they are dentists

So I see them as ST, and as having raised Hermione to hyper-value Thinking, which would explain why at the beginning she seems to think that being smart and having good results should be enough to garantee her the love of her friends: because that's exactly what her parents' behaviour led her to believe.
Let's see, this might become a little scattered. Hesitant to break rules. Is eager to follow known procedures, studious.
I see how this could point to Te, but it can just as well point to Fe. INFJs can be perfect little obedient studious angels, if they think this will bring them the love of the people they respect and look up to.
Perfectionist, emotional, easily hurt.
Great amount of respect for the more concrete wings of education, and an inversely great skepticism for the more abstract Divination. (However, this could also be attributed to the INFJ skepticism.)
Well, most of the Magic courses taught at Hogwarts are pretty concrete anyway, so it's hard to know how she would react to another abstract matter. With Divination, I think it's quite clear that her problem is that she comes into the class with a prejudice, and Trelawney does nothing to dispel it, quite the contrary! The prejudice itself isn't incompatible with INFJ either, since Tertiary Ti would demand some level of reasonability (is that a word?), of making sense in a reasoned way. Especially a Tertiary Ti as developed as Hermione's.
Heightened logical deduction capability and an immense capacity for facts, no doubt influenced by Dominant Introverted Sensing, allowing the synthesis of a great deal of data relating to the present, which is probably the leading exponent of the ISFJ idea. (If you look past the "Oh, look, a Ni-moment!" assumption, you'll see that those revelations are similarly based on logic rather than raw intuition. Like the bugging-Bee Animagus relation.)
Funny you should say that, since those Ni-moments are a huge reason why I see her as an INFJ

There are just too many of them, and she is way too often right, and she doesn't parade most of them: that smacks of confident, Dominant Ni. And yes, those moments are also based on logic, but then they *would* be, in an INFJ

We do use Ti a lot to support our Ni. However, logic alone isn't enough: it's the WAY in which she puts together all the *relevant* clues that screams Ni to me. "Voices coming from inside the walls? Pipes!" "Our teacher is a werewolf!" "Rita Skeeter is a bug!" *Anybody* else COULD have reached those *logical* conclusions, but nobody else DID, and that's the whole clincher: it takes MORE than just logic to reach that kind of conclusions, it takes iNtuition, and Hermione's got loads of it. She even uses it routinely, like when she so confidently dissects Cho's emotional state (whether she was right or not is interesting but not directly relevant: what matters is that she is so sure and so matter-of-fact about it all). Hermione, to me, is very clearly a DomNi.
And quite honestly, I do not see much Si in her, certainly not enough to be DomSi. But then, Si is the one function I understand least, so I'm on very shaky ground here
On the other hand, the whole SPEW ordeal is the biggest contributor to the INFJ consideration. ISFJs might also be bothered by the "mis"treatment of the house elves, but they would probably shrug it off as a necessary flaw within the system that has to be accepted if the system is to be preserved. The INFJ would work to improve or replace it, allright.
Interestingly enough, Hermione *does* seem to accept it as just a flaw in the system, by the end of the series. Though personally, I see that more as a clue of JKR's dropping that theme, than Hermione's true feelings about it.
Yeah, I was hoping for a Harry/Luna pairing. So what?
I liked the idea of Harry/Luna by the end of Book 5, but I just knew that Harry/Ginny was what the author had in mind. However, after the way she totally botched it in Book 6 (IMO and to my tastes, obviously), I decided to enroll on the doomed Harry/Luna ship anyway
A honorary mention to Percy Weasley, who for representing SJs in the near-worst light possible, gets a one-liner.
He only looks so bad because both JKR and Harry see him that way. Personally, I always liked and *understood* Percy, and I came to truly hate the Twins for the way they treated him, both before and after the family fall-out.
The Grey Badger said:
Dumbledore - ENFJ. The biggest clue is his certainty that he knows best and is doing what's morally right For The Cause, never mind the human cost.
That's self-contradictory

ENFJs are ALL about The People, not The Cause. If The Cause demands that The People be crushed and walked on, then The Cause must be dropped or at least re-evaluated. In fact, "what's morally right" is pretty much *defined* by "how will it affect The People?" for ENFJs! If it has a negative effect on people, then it's morally wrong. So, no, no way Dumbledore could be an ENFJ

IMO only, of course.
(And nobody bothers telling me I'm obsessed/obsessive about all that: I KNOW

)