Like dreams and shamanic journeys, our whole system, individuals, internal landscape and personal imagery can be full of rich metaphors.
My personification of an Encryption Algorithm took on a persona, and has a startling resemblance to a female version of my father-- the metaphor for strength, deep and explosive anger, being in charge, etc. that I needed to foil my abuser. Some of the Internal Objects in my system are metaphors for keeping track of information such as a journal and a file cabinet. Guardians will often take on fierce and strong personas, often dangerous mythical creatures of great strength such as demons, giants and dragons.