The Elmdor-Appreciation-Out - Number of practitioners: one.

[Till]

Alien-size Tsoukalos-ACR9000 Ultratoilet(Alien Contact Radio 9000), contacts and recruits ultraterrestrials from parallel universes.

Spoiler warning:

And the left arm of that Predator mod gets in the way of Pip-boy display so I'm not using the costume. Only the right arm, belt and leg armor. No chest armor or helmet, it has great stats without full set and is alien tech.