At long last, it's time to take down Diablo in Diablo Immortal. The story threads of Blizzard's mobile ARPG have been building to this moment since the game's launch in 2022, and it all will culminate not only in the game's largest new zone to date, but also its biggest boss battle yet--against none other than the Lord of Terror himself.

Yes, Diablo is finally at full strength in the Shattered Sanctuary update, and it will be up to players, armed with the angelic blade El'druin, to put an end to his world-altering efforts. To the far north of Sanctuary at World's Crown, Diablo has unleashed the power of the Worldstone Shard in his possession and started Sanctuary's unmaking. After battling Diablo's armies through an increasingly surreal hellscape, players will confront "Big Red" himself for the first time since the end of Diablo 3's story 12 years ago.

GameSpot chatted with Diablo Immortal lead content designer Scott Burges and senior narrative designer Ryan Quinn ahead of the Diablo's return in the December 13 update to learn more about how Blizzard approached bringing back the iconic villain and where the game's story will go next.