ugh... Harry Potter... no... I don't see it at all. I can't identify with him or his actions in the least like I can most ESTPs... no- he has that moral compass thing going for him that's much more Fi
Harry is Fe to the bone. His actions are not based on internal values and he never tortures himself over whether he did something wrong, or things not going the way he wanted them to go, etc. Instead he has a very strong strong empathetic, heroic impulse (which Hermione has referred to as having "a bit of a... saving people thing").
Two of my closest friends are ESTP (confirmed), and two more are likely ESTP as well.
Harry is quite clearly Se Ti. He's very sharply attentive to detail, clear-headed, deductive, and enjoys action and activity; which is why he's such a good seeker and so very skilled at mastering hexes and DADA in general. He also greatly enjoys social interaction, only seeking time alone when under great emotional stress, and even then he falls back on the support of Ron and Hermione -- especially Ron. In the fourth book it's made apparent when Ron stopped speaking to him for a month, that he heavily relied on the emotional support of his friend to get through rough times.
I cant "see" ESTP in harry potter, but it makes sense. I think he is Fe because I cant "see" Fi. He is also a P type. Other then that he seems to be a hybrid because he doesnt fully encompass Se in either dominant or aux manner. I have seen quite a bit of ENTPs, especially kids, that are into sports and are active. They are very aware, but definetly Ne instead of Se.
Take what I say with a grain of salt, because that's all it is compared to the ocean of complexity when it comes to actions and real life.
The majority of his life some thing or another is going on that would fuck with his good nature (a friend dying, everyone else hating his guts except his friends, the girl he likes seeing some other guy right in front of him like in the Yule Ball...), but whenever his life has some semblance of normality he does have that playful aura.