Sargoth

"Sargoth betrayed us. For his terrible crime...he was imprisoned for eternity. Or, so we believed...When I faced him again...something had changed. His rage had grown...granting him terrifying power. I fought with all my strength. Everything I had! I failed. You, must not."

- Namari

Sargoth is a nephalem who betrayed his kind, allying with Hell.

Sargoth possessed exceptionally powerful magic. Of note, he not only had the ability to summon demons to his side, but would gain their power upon their defeat. He despised humanity, seeing them as nothing more than "a pale shade" of their nephalem forebears, and as being unfit to inherit Sanctuary.

Biography
"Sargoth, the despoiler of life, has been prisoned inside for millennia. My soul was bound to this place to ensure the dark summoner never escaped. Yet, eternity is a long time. The power of the Nephalem has waned, and Sargoth's connection to the Burning Hells has only grown stronger. He will free himself in time. And I am bound here, helpless, without the three beacons. Only with your aid can the beacons be returned. There is still a chance to eliminate Sargoth before he unleashes havoc upon this world. Do this, and I will entrust to both of you what you seek."

- Namari

Long before the destruction of the Worldstone, Sargoth betrayed his fellow nephalem. For his crimes, Namari and her fellow nephalem sealed him inside a temple. Barriers were erected inside it to help contain his power. Three beacons imbued with preservation magic were installed to ensure that Sargoth remained alive. However, such was Sargoth's rage that his power increased over time, as did his connection with Hell. At some point, Namari confronted Sargoth, and found that his rage had granted him terrifying power. The two fought, and she was defeated. Her soul was bound to the site to ensure that he never escaped.

Over time, the temple was plundered, including the beacons. In 1270, someone stole the last of the beacons from the temple, which prevented Namari from intervening as Sargoth's power continued to grow. AFter the beacons were returned, Namari guided a hero/group of heroes through the temple. It turned out that Sargoth had enslaved nephalem spirits to his side, forcing the hero(es) to fight their way through them, along with his other minions. They were forced to deactivate the barriers, which allowed Sargoth's strength to continue.

The hero(es) confronted Sargoth, who summoned demons to his side. The hero(es) were able to defeat them, but drawing upon the power of the slain demons, Sargoth's power increased even further. He stepped into the fray, battling the hero(es) himself. However, he was slain, and in his last moments, called out to Diablo to lend him strength. However, no help came, and Sargoth died.

In-game
Sargoth appears as the boss of the Temple of Namari dungeon in Diablo Immortal.

Sargoth summons multiple monsters to his side, but in the first three phases, does not take part in the fight himself, nor can he be harmed. Instead, he summons three Super Unique monsters in randomized order. These include Cold Snap, a Fallen War Matron, and a Siegebreaker. Only after the third monster is defeated will Sargoth enter the fray.

Quotes

 * So this is Namari's last hope? A pale shade of our kind's former glory. Come, then. Bear witness to my return!


 * Cold Snap


 * Let's see how you handle the biting chill of the abyss.


 * Fallen War Matron


 * To defeat a demon is quite an ordeal, isn't it? Let us see how you handle another!


 * The fallen horde is now at my command.


 * Siegebreaker


 * Look at you. Tired. Weak. Unfit to inherit Sanctuary.


 * Face the living siege engine of hell!


 * Sargoth


 * You have done well. With these three sacrifices, the power of Hell is at my command once more.


 * This world is mine, as was promised! And you filth will not stand in my way!


 * Al'Diablos...lend me your strength! What? N-nothing. Only...darkness...