Already typed Javert as ISTJ. Relying on type descriptions like that usually doesn’t work for MBTI as they are often too vague. Both INFPs and ISTJs have the same cognitive functions – Si Te Fi Ne.
If he was INFP, he would be much more likely to accept the doubt that Valjean brings into his life with higher Ne. But we see he breaks under anything that breaks from the rules and what he has always known – clear signs of dominant Si and inferior Ne, instead of auxiliary Ne and tertiary Si as INFP would have.
Also, he doesn’t seem to show inferior Te, as INFPs would have – he excels at creating and controlling structure in the world, and tends to make logical decisions. There’s auxiliary Te.
What you’re focusing on is the Fi element, which is Javert’s tertiary function – it’s a lower function, so although he has strong inner morals he also feels the need to force them on the rest of the world. That’s how high Te + low Fi looks – think Alexander Hamilton, with his strong personal ideals always being implemented on the world.
– Rebecca





