Well the picture above really shows classes. They all look like Humans to me, but it's not exactly easy to tell. I think what will make each character unique - in addition to their race-specific back stories, is how we complete the missions in the game, who we fight alongside and against, and what choices we make. Unlike other RPGs or just games in general, Destiny seems to be a game where we're creating the Campaign storyline ourselves. We have the backstory and all, but [i]we're[/i] the writers and [i]we're[/i] the ones playing the part. Bungie isn't telling us that Titans attacked this base on this day; [i]we're[/i] the ones writing that piece of the story, and that's what intrigues me most about this game.