I read Ender's Game years ago, so I'm not gonna be a huge help here, but wasn't he all "Hey, no sweat, I'm better at video games than anybody?" Which would lead me to think ISTP. Otherwise I'd say I don't remember the characters being all that three-dimensional.
I think many people will tend to identify with Ender as they read the book. He did seem ISTP to me on first reading (his strategic expertise, plus just recognizing the thought patterns) but he could easily be INTP, INTJ, INFJ, INFP, ISFP, etc, or even extroverted. That kind of character doesn't really fit neatly into any type. He also changes dramatically as he grows older.
I would put bean as INTP or INTJ, and Peter as ENTJ...not sure about the rest of them.
I'd need to re-read all the books to really say though...it's been a few years.
Really? You guys don't see the overflowing Fe motivation ("Why do they have to make me hurt them? I don't want to hurt them!")?
I can identify with that thinking. I wouldn't call it his motivation, but rather his response to difficult situations. At least in the earlier books, I don't see a vision to save the world, etc...mainly he just looks after himself, his team, his sister, etc. I get the vibe from him that he does what he has to do to get by and to succeed, rather than going on an Fe-driven mission. (in fact, I see an ISTP tactical assessment of the situation, cost-benefit analyses, knowing what you have to do to succeed in a particular area and then doing it--I'm not necessarily saying he is ISTP, but his actions are very tactical and strategic rather than person-oriented)
You have to keep in mind that he's hardly normal, or in normal circumstances...that changes everything. I don't think all non-Fe users are fine with hurting people, either.
I could see him as INFJ, but I don't see it as the only option, by any stretch.
Without a doubt, Ender is definitely an INFJ.
Jack Flak's description of Ender is somewhat inaccurate.
The thing that had Ender excel so much in the games was simply due to the fact that he was the smartest kid there.
I agree with most of the others but I actually think Petra is a P rather than a J but I haven't read Ender's Game or Ender's Shadow in a while and I was a less sophisticated typer back then.
The ENTJ/INFP dynamic is so obvious with Peter and Valentine.