Spartans are humans who are like machines (as noted by Bungie, "Like a Spartan, you are half human, half machine"), whereas Orbital Drop Shock Troopers (ODSTs) are like ordinary, highly trained Marines, but not quite as tough as a Spartan. A mistake made by Bungie makes the player slightly like Spartans for the following reasons:. First off, during game play, you are as tall as a Spartan when you are standing next to an ODST squad mate. Also, you can wield a Gravity Hammer, despite the only ones known to wield them are Spartans, Elites, and Brutes---not ODSTs. Finally, you can melee Brutes to death, while only Spartans can really do that. The melee attacks performed by people with lower ranks than Spartans do not affect Brutes at all.