My favorite character in the book so far is Gregory. He is a servent of Fyodorovich Karamazov who takes care of Karamzov's children. In the book it seams like their is a cycle that repeats its self twice. Fyodorovich gets married, then he has a son or two, then his wife dies and he forgets about his son. Gregory steps in and takes care of the boys. If Gregory was not their the children probably would have been forgot about.
The character that I like the least is obviously Fyodor Palvoich Karamazov. He is wicked, cruel, and extremly stingy when it comes to land. I mean, what kind of a person could forget about their children and treat their wife so horrible.