Even Hell's fiendish inhabitants know to stay clear of the maddening buzz of hellwasp swarms. While individual hellwasps are mindless, when swarmed together they gain a hive mind that torments the living and the dead alike. Sages and diabolists argue as to why this happens, but a favored explanation is that all hellwasps contain the dispersed soul of some greater devil, scattered and imprisoned by his rivals for infractions lost to mortal knowledge.