Medical hybrid microbiorobots driven by powerful microorganisms (e.g. bacteria) or motile cells (e.g. sperm cells) represent a promising approach to perform non-invasive medical tasks in living organisms, such as local diagnosis and therapy. They combine the advantages of biological components (e.g. self-guidance mechanisms, ability to move in physiological environments and the possibility to load them with different cargoes), with the functionality of engineered microparts (e.g. imaging, cargo-delivery, micromanipulation) [1]. To this end, our group has developed medical microbots to assist sperm with motion deficiencies to reach the oocyte towards the treatment of two of the most common male infertility problems: oligospermia - low sperm count, and asthenospermia - low sperm motility, envisioning them for future in vivo assisted fertilization [2]. We have proven the potential to guide motile sperm with a magnetic microtube by aligning it along an external magnetic field [3]. Sperm release was also possible using a rolled-up thermoresponsive polymeric microtube, operating at physiological conditions [4]. Moreover, we reported the use of helical micro-carriers, driven by an external magnetic field to transport and release functional but immotile sperm cells [5].