Lore:The Vanguard
From Destinypedia, the Destiny wiki
The Vanguard is a Lore book introduced in Lightfall. Entries are unlocked upon reaching Guardian Rank 4 for the first time. It explains the main organization the Guardian works for: the Vanguard.
I. The Leaders Who Guide Us
The Vanguard is the Last City’s greatest defense and first line of offense when a threat presents itself. The organization is comprised of a long, storied line of elite Guardians with a leader chosen for each of the classes: Hunter, Titan, and Warlock.
Commander Zavala serves as Titan Vanguard. A force of nature, as unyielding as he is deadly. He has led the Guardians to victory in countless battles, and the moment a threat presents itself, he Last City looks to him as both a leader and a protector.
Ikora Rey serves as the Warlock Vanguard. An unmatched scholar, and one of the most formidable Warlocks in the history of the Last City. She oversees the Vanguard’s intelligence network known as The Hidden.
Currently, the Hunter Vanguard position remains open. The title once belonged to Cayde-6, a Guardian as quick as a gun as he was with a joke. He met his final death after his Ghost was killed-a sobering reminder that even Guardians can be slain. A statue of him stands in the Tower to keep his memory alive.