This book presents an overview of human models, emphasizing their applications, constraints and objectives in industry. Regarding the increase of importance of the human aspects, it stresses that the conventional human models are not adapted to respond to analysis requirements during concurrent design, which is a design management approach, characterized by a wide application of integrated multi-software platforms. Faced with this challenge, it proposes combining various human models in a dynamic and adaptive multi-agent/multi-scale architecture. This approach is adapted for use in 3D and virtual reality platforms, to model and analyze human aspects in parallel with the technical aspects. It is exemplified by modeling a human walking scenario, taking into account alternatives related to the load carried and the existence of threats in the workplace.