Transdimensional realities, usually shortened as TDRs, are analoguous planes of existence and an essential part of the multiverse. They encompass entire universes. Deeply connected to the concept of analogues, TDRs are a direct result of time: their existence is entirely subject to its propensity to divergence and convergence, producing or unifying timelines if changes are too great or too small, respectively, working in the same way that analogues do.