Alpha (α): socially (and in some interpretations, even biologically) dominant, physically built, short-tempered and a natural leader; Beta (β): depending on the story, they are regular human beings, or have a mix of Alpha and Omega traits, or their own unique traits; Omega (Ω): submissive and gentle, calm and a peacemaker. Some works introduce a rigid caste system, where Alphas are depicted as the upper class elites while Omegas are at the bottom tier and face discrimination and oppression