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The Fanatic's Chosen are powerful Scorn Chieftains that serve under Fikrul, the Fanatic. They first seen during the mission High Plains Blues to put down The Spider's associates and their Guardian back-up. After the events of Forsaken, they patrol the Dreaming City commanding what's left of the Scorn.
Three years later, they would be encountered once again within Savathûn's Throne World as part of the Resonant Destruction Public Event in the Quagmire area. They would also appear as final bosses in the Preservation Mission, where they lead Scorn forces in an effort to take control of the Sunken Pyramid, which was left abandoned after the death of Rhulk, Disciple of the Witness.
In the Dreaming City Patrol Zone, the Fanatic's Chosen can appear in all three areas—the Divalian Mists, the Strand and Rheasilvia—as high-value targets. Unlike those previously encountered, however, they appear as Ultra-class enemies, possessing a powerful stomp melee and considerably more health. When encountering them, they will continuously fire at the player while attempting to reach the despawn area. Like other Chieftains, they are capable of summoning Ether Totems. Depending on whether possess Arc, Solar or Void, they will use a Tether, Torch, or Shield totem respectively. Successfully killing one of the Chosen rewards the player with a chest full of loot.
The Fanatic's Chosen will appear throughout the Resonant Destruction Public Event, specifically when it is active in the Quagmire area. They serve the same purpose as the Resonant Shepherds in the Miasma and the Thieves in the Florescent Canal: to disrupt the progress of the Splinter. When it has gotten far enough, the superweapon will be blocked by large, orange shield dome, where multiple Scorn will spawn, including one of the Chosen. In order to disable the it, participants must kill all of the enemies inside and destroy three Darkness crystals. Doing this will lower the shield, and you may continue to guide the Splinter to its destination. After you have gotten further, however, a second dome will spawn and the process will have to be repeated.
The Chosen serve as the final bosses of the Preservation mission. After you have defeated all the enemies in the Acquisition section of the Pyramid, where the first encounter of the Vow of the Disciple Raid takes place, the large door on the far side will open. Three Fanatic's Chosen will be waiting for you in the next area, protected by hordes of Scorn, consisting of Wraiths, Lurkers, Raiders and Stasis Censer Ravagers. All three of the bosses are large Solar Chieftains, each equipped with Scorn Blasters and possessing significant amounts of health. They will stick to the far end of the arena, mostly allowing their reinforcements to deal with the player. The Scorn will spawn continuously and in large numbers until their leaders have been eliminated, and it is very easy to be overwhelm by them if you do not take them out quickly. Once the Chosen have all been killed, any remaining enemies will despawn and the mission will be complete.
List of appearances