One who belongs to the lowest caste in Aldous Huxley's book Brave New World. Known for stunted growth, inferior intelligence, yet indispensibility. After death, they play a crucial role in phosphate reclamation. In short, a useful idiot.
Also known as "Epsilon-minus semi-moron"
Everyone works for everyone else. We can't do witout anyone. Even Epsilons are useful. We couldn't do without Epsilons.