More realistic? LOL SERIOUSLY? Lotzo is a toy bear that talks!
... yeah I don't unerstand how that is hard for your to understand. Obviously none of them are real but it's about writing. Which is written as a better character.
Look at this way. Wall-E was a robot who only said one word. But even then if I asked you to describe his character you could. You could probably do it easier then trying to describe Padmes character.