Done. This point won me over. You're right; Terra doesn't seek adventure like a typical SP, nor does he accept himself like an ISFP would. He spends the greater majority of his time trying to resolve his existential crisis - 'fix' the darkness within him. And INFPs, more than any other type, are big on self-improvement.
Yeah, that's basically it, I think. Terra as an SP didn't make that much sense to me.
On this premise, Terra and Aqua make an awful match because INFPs are known to be extremely incompatible with ISTJs... lol.
Heh, well... I'll admit that putting them together in an AU will either inevitably end in either character derailment or cruelty to Terra.
But, as the situation stands now, I wouldn't consider their personalities to be a deal-breaker.
I mean, for one thing, they're both Introverts with somewhere between a decade and a decade-and-a-half invested in each other. XD; Neither of them is going to be much inclined to fall away, even if they're hurt.
And, more importantly, I don't think Terra can be broken any worse than he already is. In his present state, I'm not sure he's capable of standing up to his inner SJ voice and telling it that it's wrong about him. I suspect it would be /incredibly/ helpful to him for Aqua - whose SJ tendencies are even stronger than his inner critic - to tell him that the expectations placed on Terra were wrong to begin with.
Plus, Aqua's got some issues of her own related to her T tendency. While she definitely acts as an ISTJ, there are some pretty strong hints that her T-F axis is more balanced than she allows it to be - her heart contains much more Fe concern for others than she willingly lets on. When it's focused towards Terra, she tries her hardest to crush it down as if it were weak, which I suspect is related to her own training - she's more willing to express her worry for Ven, probably because it's acceptable to be overly-protective towards children. A realization of just how much damage that did to Terra seems like it might help bring her more in line with her own natural tendencies, too.
...basically, both of them are horribly broken and in desperate need of repair, and they're both perfect representatives of everything the other needs to learn. I'm not sure if that's romantic, but it's certainly a lot more interesting. XD;
I still have difficulty deciding where Xion lies on the S-N axis. It's pretty much established that she is Introverted and has a strong Fe, which leaves two types: ISFJ and INFJ. She exhibits characteristics of both: like the ISFJ, she is devoted to fulfilling her duty (initially to the Organization, then to Sora), and like the INFJ, she is strong-willed and determined to carry out her goal even at the exclusion of her friends' support.
I'd tend to put her as an INFJ, because so much of her knowledge comes through
her connection with Sora rather than through her own experiences. Besides, she
abandons the Organization repeatedly when she thinks there's something else she should be doing.
And, because I like to get into extended discussions about controversial elements of characters, I'm going to say that
I think Master Xehanort is an S rather than an N (I'd also say the same about Riku, for the same reason).
The thing that drives him, more than anything else, is his desire for new experiences. The first thing we hear him say (as Young Master Xehanort) is, "This world is just too small." His overall goal is to "be there to see what lays beyond the Keyblade War," opening Kingdom Hearts itself to fulfill his childhood dream of seeing the farthest reaches of the world (by creating a new one no one had ever set foot in before). He takes his first step into the darkness because he could feel its power through his armor when traveling in the Lanes Between and decided it couldn't hurt him.
So, I don't think INTJ makes all that much sense for him. He actually seems to fit more as an ISTP to me: very interested in understanding how things work, a desire for new and exciting experiences, and a strong distaste for rules that get in the way of what he wants.
The problem with that, of course, is that Master Xehanort is incredibly effective at extended manipulation, while ISTPs operate in the moment rather than according to plans.
On the other hand, he /does/ seem to ignore the parts of his plan that he's not particularly interested in. I don't get the feeling he gave Vanitas very many specific commands - he seems to have generally just let him do his own thing as long as he didn't get in the way - and he completely wrote Aqua off because she wasn't of any use to him.
And, in terms of his preference order, Ti-Se-Ni-Fe makes the most sense to me, too. He's a scientist type, so dominant Ti is only logical. Auxiliary Se, as mentioned above, is most consistent with his need to experience new things. And inferior Fe works pretty well with his tendency to be callous towards everyone else and express his satisfaction at his plans going well in fairly inappropriate ways.
