Northstar doesn't really have a smile per se...more like a smirk. Whatever it is they're smiling at really doesn't do much for him. Conversely, Aurora has a huge almost joker like smile on her. Whatever it is certainly has her attention. she seems like the naughty type too. Geez, I'll bet it is a donkey and a midget.
"God you are a Genius Budman." --Alexander Ness
"I know." --Budman