The Great Crusade
A giant even among Astartes, Kol Badar rose to become a Captain in the Word Bearers Legion of the Adeptus Astartes during the Great Crusade. It was Kol Badar who planned the assault on the world designated Forty Seven-Sixteen, which became the first world to fall to the Word Bearers after Lorgar's conversion to Chaos. Shortly before the beginning of the Heresy, while surviving under a Dark Apostle known only as the Warmonger, Kol Badar's closest blood brother was killed by Marduk in undisclosed circumstances. Jarulek, the First Acolyte to the Warmonger, promised Kol Badar the chance to kill Marduk.
The Horus Heresy
During the Heresy Kol Badar was part of the Host that assaulted Terra.
Kol Badar was Coryphaus to the Warmonger until his death, and then to Jarulek upon his ascension to Dark Apostle, a post he held until Jarulek died on Tanakreg. Upon Jarulek's death he passed into the service of his enemy Marduk. Despite their mutual hatred, Marduk recognised Kol Badar as an invaluable asset to both him and the host he led. Kol Badar had eventually proven his loyalty to Marduk following the battle at Boros Gate, slaughtering members of the Brotherhood, Word Bearers who had turned against Marduk, and helping expose a plot to depose Erebus from leadership of the Dark Council in favor of Kor Phaeron.3
Kol Badar is a formidable warrior and wears an ornate suit of Terminator armour, with a horned helmet, "crafted in the likeness of a snarling bestial visage". He is armed with a combi-bolter. His close combat weapon of choice is inconsistantly referred to as power talons or a power fist. He leads his elite group of Chaos terminators called the Anointed. 2