Zu Online Secrets #4 is available today. Focusing on character design and diversity, here is what developers have to say about their efforts to that end:

Because they are always changing and could possibly have an infinite number of positions and expressions they present a particular problem to designers. Take one look at the characters in game though and players can see that there is no lack of fine detail. Whether it's the muscle definition on the Sun Warriors, the pleats in the Swordsmen's robes, or even the delicate features of the ethereal Moonmaidens, the balance between detail and lifelike actions, gestures, and expressions has been maintained. This is especially apparent when casting magical spells, with flashy and gaudy effects displaying the power and intensity of the spells to be cast.

Check out the rest along with some screens illustrating their point at the link above.