Dr Catherine Halsey was the ugly slutty scientist who created the Spartans (aka, Badass dudes from hell). The Spartans became so badass because of an accidental dose of Gruntiness. Dr Halsey mistook the syringe of Gruntiness, with a syringe of crack she was testing on the Spartans. Once injected with the Gruntiness all but a few Spartans perished because they couldn't handle it, one Spartan (Master Chief) showed symptoms not unlike that of an aids infection. And like and aids infection, it changed him, but it changed him into the ass kicking, mofo we know and hate (due to his massive grunt slaughtering record). Most of the Spartans strength came from having fucked up the bitch every day and having wild hot foursomes. To have them to herself, Halsey spread a rumor they were all neutered. Sh