Type: Aberration (List)
Race: Beholder (List)
Monster Manual classification: Beholder
Boss: Red Named - Quest Boss
Habitat: Invaders! — Final boss
Description: One of six mutually exclusive red-names which can appear: Boktar, Garzuul, Grokien, Prysuul, Tharkuul, or Tyrzza.
Defeating him will awards 5 Outsider Tokens in the end chest. His chest may drop Beholder Optic Nerves.