alastor

noun3

1. •
   An avenging spirit or deity, variously associated with the Erinyes, Nemesis, and more.
2. •
   A genus of hunting wasp
3. •
   In more recent ages, a term of rebuke for a pestilent rascal.

   • James Orton's choice of "Alastor" seems to have been an ironic pen name, suggesting a presumptuous voice. — 1852