Alphas: the most powerful caste, physically they are stronger than the rest, have strong aromas because they usually use it to cover the aroma of a Omega; also have the Alpha voice, something that helps them control an Omega. It is illegal to use. Betas are not that different from a normal person. Omegas: Physically weaker, with delicate builds, are usually shy. Have sweet aromas, as they should provide calm, They wear anti-marking collars to avoid an ownership mark/bound with an Alfa.