You can claim a few characters from the terminal. there will be the room ( where you can click on the datapad if you level up hyla, the voss, aygo, ogoogab's influence).
Starting in the southwest room (i think hyla's room), go north a bit, you'll see the tiny room just up on the left. in there is the 4 companion holopad, right across from it is the terminal, it doesnt have any label on it, but right click it anyways.
you can reclaim ones you may have lost and kotet kotfe comps(also works if you killed a comp). so it wont change any stories but you can still use them as an active companion or for crafting