ㄏㄟㄅㄞˊˊㄔㄤˊhēibái‑wúcháng

黑白无常
  1. 無常無常民間信仰中的閻羅城隍神明部將專職緝拿鬼魂

Two deities, one short, one tall, chained together at the ankle, responsible for rewarding the good and punishing the bad