Amongst the broader plural community, there is a term called "walk-ins" to describe members or entities that come from outside a plural psyche. For many plural peoples, walk-ins come and go and can usually be very temporary. For us, we have 13 of them, and they seem to be permanent residents now that they've joined us. And we call them Outsiders, or Beshakete.
Phage is the first Outsider to join us, but apparently there are twelve others according to the Auditor. As part of Project Open Door, we are currently in the process of inviting them to the Bridge and meeting them. This is taking some time.
So far, we have met: