Interactive environments are in need for believable characters. Their personality and emotions should affect the behavior in order to increase the emotional immersion of the player. In our new model virtual characters (or agents) are equipped with an individual personality and dynamic emotions. Both models interact within the selection of appropriate actions, and are thus central for the exhibited behavior of autonomous agents. The proposed model is applicationindependent and allows to render a rich set of behaviors for virtual characters in learning environments like Squeak eToys or even distributed 3D spaces like Open Croquet.