Illrigger

An Illrigger is a martial fiend-sworn knight who serves an infernal power. They blend blade, guile, and diabolism into one disciplined, terrifying package. Unlike wild warlocks or chaotic cultists, Illriggers are professional devils’ agents: spies, executioners, inquisitors, and battlefield commanders who act with cold purpose.
  Often charismatic, always calculating, an Illrigger believes that authority is strength, contracts are sacred, and fear is a tool. Their oath is not to honor or virtue, but to the efficiency of tyranny.