Flamingos-2 (F2), mounted on the Gemini South telescope, offers imaging, long-slit and multi-object spectroscopy (MOS) across various near-infrared bands.When paired with GeMS, the Gemini Multi-Conjugate Adaptive Optics (MCAO) system, it creates a remarkable astronomical tool in the Southern hemisphere.The feasibility study indicates that the on-sky field of view (FoV) encompasses a 2.37 arcmin diameter.Preliminary GeMS+F2 long-slit tests achieved a spatial profile full width at half maximum (FWHM) better than 0.3 arcsec (1.9 pixels) under 0.85 arcsec seeing conditions.The instrument's long-slit covers 1.6 arcmin in the sky.MOS masks are capable of accommodating up to 48 slits in sparse fields and around 80 targets in crowded or extended fields.Anticipated background issues are minimal in the J and H bands, while comprehensive testing is essential to evaluate thermal background in the K band.Incorporating GeMS alongside F2 significantly improves spectral resolution by at least a factor of two, particularly at spectral range edges.Finally, a noteworthy outcome of the study reveals that F2 with GeMS in non-LGS mode produces a “super-seeing” mode with enhanced image quality by a factor of 2 or more.