User blog comment:AYET/The SINs of the Straw Hat Pirates/@comment-972068-20121009043339

Zoro falls under sloth. He likes sleeping and booze too much.

Usopp falls under pride. He's so proud of himself without ever actually doing anything. He can also fall under envy, though not after the timeskip.

I can see Chopper as a little envious.

Robin can be a wrath, seeing how she fights and how hateful she is against people who destroy history.