Arnout Vester also known differently as Brenden Vilfe, Appo Saxon or Manfred Whimplebottoms was a famous bounty hunter from the Nilfgaardian Empire hired by Emperor Emhyr var Emreis himself to kill the witcher Letho of Gulet. But Letho found him first in Velen in the village Lindenvale. Letho described him as following:
He prefers specific method of punishment - rip the teeth out, one by one, then cut the mouth open ear to ear. It's how they punish deadbeat debtors in the Imperial underworld.