Hello.
Story:
Before recruiting Marv, on arriving on the first trade hub station (independent_trade), then exiting the game and opening it back, a person was seen approaching me. At first I thought this is another station dweller, so didn't think much of it. But it started following me around, and soon others joined me.
They follow me to my ship and generally obey my commands as "crew", even without any crew recruited. There are about 5 guys dressed like me.
I managed to space them a couple of times, but they are always waiting for me at any next hub station (excluding One's base).
Once, they started repairing the ship that I boarded (I'm still a newb with commands, so maybe I somehow commanded it to the crew). This was very efficient and awesome, but I still don't like the "buggy" and unexpected nature of these guys.

Screenshot: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2073802833

Edit 1: they are not considered as "replacements" when my main character dies, only Marv can be teleported into.
Edit 2: they just helped me liberate a transport that I boarded by mistake instead of docking with trade hub.