I found a lvl 47 3DD1.E in a holodome’s vendor while doing stuff with Athena… 
ive only ever gotten from grinder and vendors and i have so many different lvls. best oz kit ever. of all time.
Well you didnt farm him long enough. He does drop it.
It is not a respawning “boss” … is it?
He does respawn. Just don´t kill him in the mission.
So if I capture him during the mission instead of kill him… then later I can come back and kill him and he will respawn over and over again?
I did not know that. Will give it a try.
Yes. I killed him like 30 times for my first 3DD1.E drop, without Alt-F4.
yeap you can farm him as long as you want. Hes pretty stingy though. Both times he dropped the 3dd1e for me it took 4 hours or more before he dropped it