Today is all about characters. I find it useful to write a character profile so I have an idea of who this person is – it helps me determine how they might behave in certain situations and what their motivations are – and this can help build fuller, more rounded, authentic characters.
I have come across character profile forms from 1 to 35 pages long! They get writers to consider basic facts, like a character’s age and gender, on to such things as their appearance, behaviour, familial background, medical records, voice, grooming, etc., etc…the list goes on.