This paper introduces a novel category of nonlinear mappings and provides several theorems on their existence and convergence in Banach spaces, subject to various assumptions. Moreover, we obtain convergence theorems concerning iterates of
α
-Krasnosel’skiĭ mapping associated with the newly defined class of mappings. Further, we present that
α
-Krasnosel’skiĭ mapping associated with
b
-enriched quasinonexpansive mapping is asymptotically regular. Furthermore, some new convergence theorems concerning
b
-enriched quasinonexpansive mappings have been proved.