Individuals have a tendency of adopting different choices of egress when they are confronted with life-endangering situations (i.e., fire accident). This behavioural phenomenon, which includes competitive and cooperative behaviours, greatly affects the egress movement and subsequently the overall evacuation patterns in time. This study aims to offer a new perspective to investigate the evacuation dynamic by incorporating two groups of distinct egress behavioural (i.e., competitive and cooperative) evacuees rather than a homogeneous group as previous works.