The MultiFlag project focuses on the design and the control of new bio-inspired microrobotic systems for future applications in the field of bioengineering. Three scientific objectives are targeted by the project: the design of multiple magnetic flagella micro-robots with optimized propulsion properties in highly viscous liquids, the design of an innovative reconfigurable robotic system to generate rotating magnetic fields in a maximized workspace, and the simultaneous control of the microrobots by the system in reduced environments. The project focuses on proposing a demonstrator to show these new opportunities around a phantom task for an operation of the spinal cord. Different performance indices will be evaluated around this task, such as the work area and displacement accuracy. This unique demonstrator opens a new door for future applications linking (micro) robotics and health at large. Research themes in achieving the main goal are numerous. They cover various topics such as the simulation of locomotion at low Reynolds number, the design of magnetic micro-robots with several flagella, the synthesis of tensegrity mechanisms based robotic systems, or the redundant and simultaneous control of magnetic systems in constrained environments. To achieve this challenge, the project members have established a taskforce with 3 PhDs co-supervised by 3 task leaders and a demonstrator all in one place, at the ISIR laboratory on the site of the UPMC, where a dedicated room will be available only for this demonstrator. This project is part of the strong (national and European) priorities in robotics and health engineering. It would confirm the place of France among the leading teams in this area of ??research. Its impact will be maximized by a wide distribution and at high level publications (Nature and Arte for exemple). Its originality will be an unfathomable source for social and economic benefits. This project involves the best teams in the field of robotics and micro-robotics. It also relies on extensive experience in the field of health and bioengineering. The leader of this project, Stephane Regnier, has seen his work recognized in the field by obtaining the IUF in 2015 and the magazine La Recherche prize for his work in magnetic micro-robotics.