The Deltas are the second worste caste group in the London society. In the society all of the groups have a colour that they wear, the Deltas colour is kaki, the people of this caster will be associated by it, and everyone will know what caste they are. The Deltaslook far more different then the Alphas and Betas, they are shorter and not as good looking. The Deltas are not nearly as smart as the Betas or Gammas. The Deltas are the first class of working slaves. The Alphas use the Deltas as slaves to do what they want, and the Deltas have no problem, they think that to have it any other way would be wrong. The Deltas are in the worst position, because they are being used as slaves and that think that its great.