And chaos.And Kosmos....
To be more serious.... Xenosaga is a very good trilogy. Although they were originally going for Six Episodes, they had to cut that in half due to budget concerns. Regardless of that small fact it's a very fun, enjoyable game. Although forgetting to save is a thoroughly bad move because it can quickly lead to frustration when you're grinding.
More-or-less, my favorite characters would have to chaos and Albedo.
I give this game a 8.8 / 10 game score.