The problem of containing pancyclic interconnection networks is an important research topic. An n-dimensional M?bius cube, MQ_n, is a variant of hypercubes according to specific rules. In this paper, we prove that M?bius cubes are all pancyclic networks. Similarly, both an n-dimensional crossed cube, CQ_n, and an n-dimensional twisted cube, TQ_n are also variants of hypercubes according to specific rules. Moreover, although the pancyclic property of a crossed cube and a twisted cube had been proved, we propose an alternative proof of this property.