Jarulek was one of the more powerful Dark Apostles of the Word Bearers Traitor Legion. A fanatic in a legion renowned for its faith, Jarulek inspired utter devotion in all who followed him. Jarulek's skin is covered in holy text, passages from the Book of Lorgar. The script is so extensive it covers the inside of the Dark Apostle's mouth.
The Great Crusade
Before Jarulek attained the mantle of Dark Apostle he was a war captain for the legion. Under orders from Lorgar himself, he and two thousand warrior brothers were dispatched from the Chairak Nebula wars to bring the world of Fortrea Quintus into compliance.
After making landings across the planet Jarulek set about converting the oppressed citizens of Fortrea to the worship of the god Emperor. Using these new found holy warriors a mass attack was launched upon the Palace of Light, the seat of Fortrea Quintus rulers. Millions of the faithful were gunned down by the well equipped warriors holding the palace, but eventually, victory was on the side of the Word Bearers.
The Horus Heresy
During the Heresy Jarulek was the first acolyte to the Dark Apostle Warmonger and took part in the assault of Terra. Upon the Warmonger's incapacitation and entombment as a Dreadnought, he took control of the Host and became the new Dark Apostle.
The Prophecy of Jarulek
Since before the end of the Hersey Jarulek has followed a prophecy of his own, written in only one place, the skin of the Apostle himself. After ten thousand years of war the prophecy came to fruition and was the cause of the Word Bearers invasion of the Imperial planet of Tanakreg.
After successfully leading his host to conquer the planet and enslave the population into creating an immense Gehemehnet, he channeled enough Warp energy to shatter the crust of the planet and expose a dormant Necron Monolith. Accompanied by his first acolyte Marduk, he recovered a powerful artifact from the tomb, but was slain by the re-awaking Necron Lord as Marduk made his escape.1