The manly arm grab from Predator would definitely happen

^^^so they would immediately just start killing each other? Uhhhhhhhhhhhhhhhhhhhhh

There can only be one. After all, thats how Bethesda would get the most money out of marketing it.

They would share stories about everything they've done, and conclude that the wasteland would be completely f*cked without them.

They would talk about the legend of the Chosen One

^^I feel like this would actually be what they would do.

Fusion Dance

Depends on karma/morality

I think they would team up and save the world (in my opinion)

^^No we are not recalling that cursed Spiderman video.