Spawn is about to cross the gates of Hell and enter Sanctuary. Blizzard has detailed Hellspawn's Vengeance, a limited-time crossover between Diablo Immortal and the iconic antihero created by Todd McFarlane.

The event begins September 29, 2026, following maintenance and runs until November 1 at 2:59 a.m. During that period, Diablo Immortal will feature special activities, Spawn-inspired powers, cosmetics and a confrontation with Malebolgia.

Spawn using his powers in the Diablo Immortal crossover
The crossover brings chains, necroplasm and Spawn-inspired powers to Diablo Immortal.

Hellspawn's Vengeance turns Spawn's powers into gameplay

One of the main attractions is Hellspawn's Bane, a Spawn-themed version of Survivors' Bane. Players will be able to wield abilities inspired by Spawn's supernatural arsenal while fighting waves of demons.

The powers highlighted by Blizzard include vicious chains, a living cloak and necroplasmic energy. As the challenge progresses, survivors will descend into an additional confrontation before returning to the battlefield empowered by the rewards they earn.

The collaboration goes beyond cosmetics. Spawn's defining abilities are being incorporated directly into Diablo Immortal's gameplay for the duration of the event.

Malebolgia enters Sanctuary in The Eighth Circle

The crossover also introduces The Eighth Circle, a cooperative activity centered on Malebolgia, one of the major demons from the Spawn universe.

Up to four players can form a party to challenge the boss. According to Blizzard, Malebolgia will use large-scale attacks, sorcery and summoned Hellspawns during the encounter.

Malebolgia in Diablo Immortal's The Eighth Circle event
Malebolgia can be challenged by groups of up to four players in The Eighth Circle.

The activity will feature daily goals based on how quickly players defeat the boss, along with ranks offering better rewards and points. Players who earn MVP four times cumulatively while in a party of three or more can also receive a unique cosmetic reward.

Vengeance Marks unlock crossover rewards

By completing weekly tasks and participating in activities such as Hellspawn's Bane and The Eighth Circle, players can collect Vengeance Marks.

Progression unlocks rewards including a selectable Hellspawn Arsenal weapon appearance, collaboration emotes, Reinforced Immortal Keys, Legendary and Set equipment, a themed avatar frame and the Necroplasmic Totem Legendary Gem.

Spawn rewards and cosmetics in Diablo Immortal
Hellspawn's Vengeance includes weapon appearances, emotes, an avatar frame and the Necroplasmic Totem Legendary Gem.

Necroplasmic Totem surrounds the player with Necroplasm after dealing damage. In addition to temporarily increasing damage dealt, the effect can consume certain periodic harmful effects and fire a Necroplasmic Bolt at a nearby enemy.

The collaboration also includes Hellspawn Guise, inspired by Spawn's signature crimson cloak, as well as Violator as a familiar transmog. Violator features the Shapeshift trait, reflecting the character's ability to assume unexpected forms.

More crossover details are still coming

Blizzard describes this reveal as only the first look at the Diablo Immortal x Spawn crossover. Full patch notes are scheduled for September 28, one day before Hellspawn's Vengeance begins.

That leaves room for additional details to emerge before Spawn fully enters Sanctuary.

Hellspawn's Vengeance will be available in Diablo Immortal from September 29 through November 1, 2026.