A mobile, modular and adjustable system for rehabilitation and/or mobility. The system comprises an outer frame and wheels. A pelvis support can be used for distributing weight of the user to the frame. A lower body attachment is movably attached to the outer frame. At least one motorized unit may also be provided, which comprises at least one actuator to assist movement of the user's hip and/or leg through the lower body attachment. A local and/or cloud-based artificial intelligence system can be used for controlling the function of the mobile system.