Mk300mk, This is an interesting question and it is definitely open for speculation. The closest correlation that I can gather, as reference to your question, between the name of the enemy class and the origin of the enemy itself are in the definition of the word itself and in the archetypal nature of the Vex. If we take a look at the definition, many of them that you will find say something along the lines of: something to make you worried because of trivial matters. With that said, as we understand the Vex, we know that they are able to warp through time through the gates that they create, so they are able to alter different realities in different dimensions. Similarly, the names that are given to many of the Vex are also found in Greek mythology, which is a factor the deep past. I hope that this comment is able to shed some light onto your question and I look forward with talking to you more in-depth on the matter.