Similar to TMDs, the orientation-dependent in-plane stiffness and Poisson's ratio indicates the isotropic behavior in Janus CrSSe. Furthermore, it can sustain a larger value of uni/bi-axial tensile strain with the critical strain equivalent to CrX 2 monolayers. In addition, it has the average elasticplastic behavior. These findings demonstrate that the Janus CrSSe monolayer is a mechanically stable and ductile compound that maintains the hybrid character. These interesting results if validated from the experiment could bring the Janus CrSSe in optoelectronic and piezoelectric applications.