my theory is this:
humans f up as always and tryed to teraform ''Red Planet(mars)'' and becouse they know that they cant live there as it is they send nano machines and sew embrios i of current life and some how those nanomachines mixed up the dna of almost every thing and thus became life it is
and if its true dungeons are just cloneing and constructing labs but the becouse nanomachines mixed up dnas of certain things and so little of left to be prime humans probbly just to save it self they became current dungeons useing current nanomachines to make items and lure nanomachine sources(people) and cloneing what left in its hands ore mixing what it have and make ing stronger wolf wariants and orges and such
and if this theory of mine is true irst 4 kings also knew the trutsh and just hid it and for mc its also means if she get her hands a another dungeon most of the thing will be available