The aim of this project is the convergence of the most essential high-fidelity presence and interaction computer graphics and vision enabling technologies forimproving human-computer and human-robot interaction in virtual as well as in augmented reality environments,involving novel virtual characters and humanoids. Both these human embodiments are very active research fields and recently their basic simulation technologies (face, body, behavior) started being applied from one domain (virtual) to the other (robotic). The proposed framework will be based on Geometric Algebra aiming to avoid previous different, disjoint geometric graphics techniques by unifying these heterogeneous character simulation technologies to allow for their seamless abstraction and application in their humanoid robotic counterparts.