Zahariel

Master Zahariel was was a formidable Librarian during the Great Crusade and Horus Heresy eras during the 30th and 31st millennia.

History
Zahariel, born Zahariel El'Zurias, was a native born on the Death World of Caliban during the period of history before the arrival of the Emperor and the Imperial Compliance of his home world during the Great Crusade. Zahariel left his home at the age of seven to attempt to join The Order, one of the most prominent knightly orders of warrior-aristocrats created to defend Caliban's people from the predations of the Great Beasts that roamed the world's forests. These knights maintained a few aspects of Caliban's ancient technology from before the Age of Strife and wielded primitive Bolt Pistols and wore suits of simple Power Armour very similar to that later used by the Astartes that were handed down from knight to knight. Despite these technological trappings, however, Caliban remained very much a pre-industrial society whose warriors rode to war on horseback. One of the most prominent knightly organisations was known simply as "The Order", and was made up of commoners and nobles alike, whereas the other knightly orders were drawn by tradition only from the Calibanite nobility. During that time, The Order was led by two formidable warriors that were proclaimed to be the greatest of the age -- Sars Luther and Lion El'Jonson. Accompanied by his cousin, Nemiel, Zahariel succeeded in becoming a supplicant to The Order, and began his intense training, in earnest, that would occupy his every waking moment for the next two years of his young life. When he was finally judged to be suitable by his Master, Remiel, he was formally initiated by a panel that consisted of Lion El'Jonson, Sars Luther and the Lord Cypher, and became a full member of The Order.

Beast Quest
A year later, Zahariel would undertake a Beast Quest, a daunting undertaking to slay one of Caliban's many dangerous Great Beasts that were indigenous to their world. Upon the successful completion of this quest, he would be guaranteed to a promotion as a fully-fledged Knight of The Order. But Zahariel's quest was not just a simple hunt, his was a quest for vengeance, as one of Zahariel's mentors of the Order, Brother Amadis, had been slain by a Great Beast the local referred to as the "Beast of Endriago."