Gotta be C-3PO. He knows what's right and what he needs to do but he's afraid of everything, more than a little neurotic and doesn't commit himself unless he has to. Even when he does fiunally commit he still looks for reasons to give up and go back home.
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Meh, it's not like I'll ever meet anyone from here. So I'm not worried about what I reveal. :P
There have been a couple of Chewbacca incidents. But it takes a lot to make me that angry. Like trying to pin the blame for a fire they started on me.