The guelc first appeared on spherus magna when the first antidermis was disrupted. The first kraata came into being and attempted to return to the virus from which they sprung. The result created the first seven guelc, known as the Ancients. These guelc looked at the war over energized protodermis and saw the entirety of the matoran and agori race as the cause of the war, and proceeded to exterminate them with extreme prejudice. The ancients repopulated by forcing more kraata into the mutagen. This caused the guelc to populate spherus magna, though at a very slow rate. The ancients sensed what would transpire should the energized protodermis be abused and began construction of The Ark, part vessel and part structure that would allow the guelc to ride out the shattering. The ancients sealed