Engineers, also known as Big pink floating Boogers, Floating Bags of Air (lays), Full of Hot Air, or Buttsacks, Huragok, HairyCock and Penis Brains are slaves to the Covenant. They never appear in any Halo game except for Halo Wars, Halo 3: ODST, and Halo Reach but they are known to exist in CE according to yo momma. They love to rape things, and so, they are employed by Humans as mechanics and rocket scientists. They are sometimes used as baloons for little children.