My favorite types?
The altruist who's only joy in life is to see to it that others are happy and gains a sort of inner strength in knowing that.
The "big sister" who by choice has attempted to take on a role of a "second mother" to her siblings
The looked-down-upon human who either by choice or by force is trying to get back in touch with nature/its animals and is often on the receiving end of the blame for everything mankind has "caused to the environment or animals" [Had a few different chars somewhat like this] More specifically, they are seeking understanding or forgiveness rather than pity or complete mercy.
The tragic character. [Had a few different characters like this too] This character blossomed at the beginning with some kind of hope and just fell through the floor, usually to some terrible end.
The temperamental, terrifying, and vicious characters who just barely skirt the edge of an evil alignment but rather than continue in such a direction, ended up becoming neutral for one reason or another. [I have had two characters like this thus far] They tend not to care when their morals are skewed, neglectful, are not the best parents and tend to pick favorites, territorial, and liable to harm what stands in the way of their aspirations, but not necessarily go out of their way to harm others.
Evil characters who actually have a motive and would rather do their own dirty work than have someone do it for them.