Here's a scenario that I have been contemplating for a while. What if the vex aren't evil at all? Stay with me, I'll try to explain the best that I can. When we're first introduced to the vex, a mysterious stranger that was not "forged in the light" tells us that they are "so evil that they despise other evil". As far as I see it, this strangers only goal seems to be destroying the vex. She never talks about any of the other races. Why are we taking the word of the shadiest character in this game? One thing she says is true; they are killing the other races. They fight the fallen on venus and the cabal on mars. Unless I'm wrong, I don't remember the game ever showing them as an invasive force. In fact, the two major times times that we fight them (the black garden and vault of glass) we invade them. Also, keep in mind that on mars we are told that they're not planning to invade....they're leaving. Going home. So, here's my thought. What if the vex are Rasputins defense against the darkness? "The gatelords protect the realms that the vex lock out of time". Rasputin fought the darkness and knew that it didn't have the power to destroy it, so it just prevented it from escaping and spreading further. Like i said, it's just an idea. What do you guys think?