All the backstory on the people in the tower can be found in the grimoire. For example, did you know that Cyade-66 (Hunter Vanguard) is only doing it (selling vanguard stuff) because he lost a bet? Originally I thought that it was a mistake to not include this content in game, but after reading WHY it's on the website it makes sense. There's just not enough room in the game to store all that data. The data storage is dedicated to the game, and all the text/info on the backsotry is on a different server. Quite brilliant, actually. Too bad I'm the only person who thinks this.