Ultracold atomic gases with the tunability of their interaction strength has proved to be a suitable quantum simulator for several many body phenomena. Imbalanced Fermi superfluids is one among the many such possibilities which has been explored in considerable detail. In this talk I will discuss a numerical framework to understand the finite temperature behavior of Fermi-Fermi mixtures. The BCS-BEC crossover as well as the pseudogap physics of such systems will be discussed in detail. Remarkably, we find that unlike the conventional superfluids the Fermi-Fermi mixtures have two different pseudogap regimes, with significantly different behavior. Further, we will try to understand the effect of population imbalance in such systems along with the emergence of exotic Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superfluid phase. Experimentally realizable Fermi-Fermi mixtures and predictions about their finite temperature behavior based on our simulations will be touched upon in this talk.