While playing the Scarlet Keep Strike and Nightfall on the Moon, players will encounter a Hive Wizard called Hashladun. During both the Strike and Nightfall, players will need to kill Hashladun in a final boss fight at the top floor of the Scarlet Keep.
But who is Hashladun lore-wise in Destiny? Not much is said about this Hive Wizard who players briefly encounter. That said, what we do know is that, according to Destiny 2's lore, Hashladun is one of four daughters of the Hive God Crota.
She leads the Hive Swarm along with her three sisters, and the Hive Swarm is a faction that came about after the death of Hive God Crota.
After the death of Crota, Hashladun and her sisters, Besurith, Voshyr, and Kinox, took the reigns of power, and ever since, all four sisters have led the Hive Swarm on the Moon.
Players can also find the minions of the Hive Swarm all across the Moon in Destiny 2, but they are primarily dominant in the Sorrow's Harbor and Hellmouth regions.
For more Destiny guides, check out Who is Immaru in Destiny 2 Witch Queen? and more on Pro Game Guides.