Do you think that the roles that each counterpart had changed over time? For instance, do you think that there was always a Slave Master or a General? Or a Peacemaker and Storyteller? Or did these roles evolve as members of both species went on and interacted with the world? Could they have been something else before the Garthim Wars?
Surely both halves of one being had to adapt and find out what they were beyond simple impulses.