- last post: 01.01.0001 12:00 AM PDT
No, no way in hell.
The whole point to Halo's story is that you, a human, is fighitng for the very survival of your race. Hundreds of your worlds have been glassed, biillions of your people slaughtered, and all this done by an enemy that literally has never known defeat (with the exception of 5 space battles and every ground campaign in which the Spartans were involved, which was only a few hundred out of the many more hundreds that exsisted). It is a war of desperation and a fight to get away from the wall you are pinned up against. Where you don't have a lot of options to escape by.
If you were to become a member of the Covenant that whole desperate feel of the war would be lost and it would get boring fast beause you are whiping UNSC ass left and right. Even as a Grunt.
So, no, no other characters. Especially if they are Covenant, Flood, or Forerunner. Stick with the Master Chief and nothing else. Keep Halo 2 a Halo feeling game.