- last post: 01.01.0001 12:00 AM PDT
ODST, being the guys in black who are shot out of ships in orbit in what basically amounts to a big shell, to land very quickly and probably go splat. No pelicans for them, they just go down the hard way. They as a history don't tend to like Spartans.
UNSC, sheesh...the people who you work for. The guys trying to protect Earth and the colonys. Also those who Dr Halsey works for when she and Keyes urmm, kidnapped John and started the whole Spartan2 project.
Would highly recommend you reading the Halo novels, it will fill in so much info for you.