McG reveals ultra-bleak alternate 'Terminator: Salvation' ending
[Spoilers coming, even if they won't make it to movie theaters.]
In an interview with io9, the director explains he wanted the movie to end with Marcus Wright, a half-human/half-machine hybrid who joins John Connor's anti-Terminator resistance movement, killing all of the main characters.
"That was at a time when there was a very dark ending," McG tells the site. "There was a great irony in the way this film shook down. There was this leak that Connor dies and they put Connor's face on top of the machine body of Marcus. Everybody went, 'Booooooo, what's that?' That's half of it [the ending]. We had a jet-black ending. Connor dies, we're in a room with all the people we care about. You take Connor's likeness, you put it on the living machine of Marcus. He sits up, now looking like Christian Bale, takes a gun, kills Kate, kills Kyle, kills Star, kills everybody, eyes flare red, [snaps] the end."
Now, we know the "Terminator" movies and television show have played fast and loose with the rules of time travel in that they say "this is inevitable" while also claiming our heroes can avert or otherwise make better the future. McG's ending, though, would with the death of John Connor actually prevent the previous movies by killing John and Kyle before the former could send the latter to the past.
Probably keeping that in mind, McG has said the jet-black ending may not even appear as a DVD extra.