Blaktoof is the Overfiend of Octarius, an Ork empire at the center of one of the biggest xenos battles in history.
Official Canon Edit
TTS Canon Edit
Blaktoof is seen being soundly defeated by Ghazghkull Mag Uruk Thraka for dominance of the Octarius system. Despite this, Blaktoof refuses to surrender, amusing Thraka. He is spared so that Thraka might enlighten him with the word of Gork & Mork.