Originally Posted by KC Fish
I kinda think that's Kili, he's just standing up when the other dwarves are sitting. And he looks tall for a dwarf...
He's also thin for a dwarf. The "reasoning" behind it is that they are nephews of Thorin and are "young" dwarves, and have not yet attained the stockiness and full beards of more mature dwarves.
You'll see it's all a show, keep 'em laughing as you go, just remember, the last laugh is on you, and always look on the bright side of life!