Probably a roleplayer, I am inclined to choose a race/background according to the role I want to play, not the stats. But when I am finished with that I powerplay like hell, squeezing every possibility to optimize my build and make my character stronger in these strict rules I have chosen for myself (Not killing everyone for exp for example).
As for a character... I was always amazed at how people can roleplay someone with different views on a world or opinions. Even if I create a character of a different race and gender, it is really interesting for me to feel in a different body and background in general, but it is still me at its core. I was trying to roleplay a Loth-Sworn drow one time, and it did not go very well. It was fun to be evil at first, but empathy still gets an upper hand. At the end of the playthrough, I said to a child who I saved before that his poem is garbage and I do not care about him, and his reaction made me think "Yeah, I feel like shit". Not to say about siding with Minthara and slaughtering the Druid grove...