I really think that this won't do good. The fictional character essay would be more suitable for your Common App Essay. This one has to be a 'person' not a comic book character.
As for the influential people essay, most of the applicants are writing on their parents or relatives (which personally I think is very obvious and trivial) and some of them are writing on teachers (common but still a better option).
If I had written on this one, I'd have not taken any generic person.
Hey could you help me too?? The summer essay, what do you reckon is the word limit?
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Summer Essay???