Sustained improvement of the efficiency of the atomization process demands development of advanced and innovative injectors followed by detailed investigation of the spray characteristics. In this work, a hybrid atomizer that combines the characteristics of a pressure swirl and airblast injector has been fabricated and thoroughly investigated. The atomizer in the current study, in which an annular liquid sheet is sandwiched between an outer and an inner airstream, deploys a swirling flow field such that the three streams of fuel, inner air, and outer air are injected tangentially. Additionally, the inner air channel possesses certain flexibilities in the form of reversal of swirl orientation and also can be recessed, leading to a prefilming configuration. The high-speed images obtained for these different geometric variations at varied hydrodynamic conditions are processed to measure different quantitative parameters such as breakup length, the sheet expansion parameter, and fractal dimension, each providing insights regarding the atomization process. The sheet is found to be most stable at a moderate airflow, as is evident from a higher breakup length and lower fractal dimension. A counterswirling inner air is found to increase the instability of the sheet with a lower breakup length and higher fractal dimension. While the presence of prefilming is found to augment the atomization at high outer air flow rates, the reverse trend is observed at lower flow rates.