10 Video Game Bosses Who Can Secretly Join Your Team

X6-88 is one of the Institute coursers from Fallout 4—a cold and calculated synth soldier who's tasked with conducting whatever dirty business his creators have on the surface.

As an Institute member, X6 is inevitably going to be fought by players who do a good playthrough and want to destroy the evil scientists' HQ. As a Gen-3 courser, he makes sure the fight is especially difficult, utilizing his superior durability and speed to shoot up whatever allies you have once you betray his masters.

However, if fighting the literal killing machine sounds like too much hassle, then you can always just join the Institute and turn him into a permanent ally.

Yes, despite the game hyping up coursers to be these deadly marvels of science, you can have one as a companion if you become one of the baddies.

Now, since he is the peak of the Institute's engineering, X6 has the highest number of stat points out of any follower in the game. If you equip him with proper weapons and armor, X6 can live up to his people's reputation and become a menace that quickly and efficiently clears every infested den in the Commonwealth for you!