Loki; Loki (Also known as Mack) was an AI on Harvest who could shift shape. Loki, in Norse Mythology, is the God of chaos, mischief and treachery, and could shift shape like Mack. Additionally, he was also infamously known to be a trickster - much like Mack. Sif: Sif was another A.I. on Harvest, and was often annoyed by Loki. In Norse Mythology, Sif is the wife of Thor and the Goddess of wheat and fertility. Ironically, Loki stole her hair in a myth. Jotun: Jotuns were machines used on Harvest. Mythologically, they were giants.