Strength levels are indicated by Greek numbers. Once characters reach level sigma and demonstrate mastery of their powers and skills through real-world applications, they also earn the lifetime rank of master. Many don’t claim that rank although they’re entitled to.

1 = alpha 2 = beta 3 = gamma 4 = delta 5 = epsilon 6 = digamma 7 = zeta 8 = eta 9 = theta 10 = iota

20 = kappa 30 = lambda 40 = mu 50 = nu 60 = xi 70 = omicron 80 = pi 90 = koppa 100 = rho 200 = sigma

300 = tau 400 = upsilon 500 = phi 600 = chi 700 = psi 800 = omega 900 = sampi