Undergraduate / "edit our profile" essay explaining why you don't wish to complete this assignment [8]

I have a question about the perspective of a profile essay.

I am writing a profile essay. My professor said that in his normal 14 week courses he would have us perform an actual interview but because it is shortened and we only have one day to write it we shouldn't bother and to just write it about someone we already know. I was wondering if I'm writing it about an immediate family member if I should write it in my perspective or the perspective of a person that doesn't know them at all? I'm writing it about my dad so should I refer the the subject as "my dad", or his actual name? Any response will be greatly appreciated thanks much in advance!