Immortal (Demon), Diablo Wiki

The Immortal is a type of demon. The Immortal appears as an NPC in the Battlefield of Eternity map in Heroes of the Storm, acting as a foe to its angel counterpart. The design of both Immortals was custom made.

Ancient Nightmare, Diablo Wiki

Diablo (video game) - Wikipedia

Sargoth, Diablo Wiki

Diablo Immortal scorches past $300m in revenue

Diablo Immortal's Demon Hunter class, Ultimate Abilities and Legendary items detailed

Article - Diablo Immortal Wiki & Guides - zilliongamer

Diablo Immortal Wiki

Diablo: Immortal - Age of Falling Towers Update Now Live

Timeline Explained: When Does Diablo Immortal Take Place?

Beast - Diablo Wiki