MSF-F2, the initial model of the MSF-series mouse droids, was retained by QS-2D at Uffel after the rest of the production line was sold off. Its typical task involved shadowing individuals visiting the moon. This surveillance was quite noticeable, ensuring visitors were aware of being watched. While most visitors were not bothered by this, some attempted to evade MSF-F2, but it would invariably reappear, giving the impression of omnipresence.
Sporting silver trim, MSF-F2 was a distinctive mouse droid. Its movement across surfaces was characterized by a waddling gait, a consequence of misaligned wheel well calibrations.