  The recent diphoton excess signal at an invariant mass of 750 GeV can be
interpreted in the framework of left-right symmetric models with additional
scalar singlets and vector-like fermions. We propose a minimal scenario for
such a purpose. Extending the LRSM framework to include these new vector-like
fermionic fields, on the other hand, results in interesting phenomenological
implications for the LRSM fermion masses and mixing. Furthermore, existence of
such vector-like fermions can also have interesting implications for
baryogenesis and the dark matter sector. The introduction of a real bi-triplet
scalar which contains a potential DM candidate will allow the gauge couplings
to unify at $\approx 10^{17.7}$ GeV.
