This paper presents a model for studying the impact of individual agents characteristics in emergent groups, on the evacuation efficiency as a result of local interactions. We used the physically based model of crowd simulation proposed by Helbing (6) and generalized it in order to deal with different individualities for agent and group behaviors. In addition, we present a framework to visualize the virtual agents and discuss obtained results. A variety of simulations with different parameter sets shows significant impact on the evacuation scenario.