Diablo

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	The following section contains information from the Diablo series and *is not* canon.**

Diablo logo

Diablo is a game universe created by Blizzard Entertainment's discontinued subsidiary Blizzard North. Unlike StarCraft and the original Warcraft games, Diablo is an action RPG and hack'n'slash series. The Diablo series consists of Diablo and its expansion pack Hellfire, Diablo II and its expansion pack Lord of Destruction, and Diablo III, released in 2012. Blizzard's Battle.net service premiered with the game Diablo, and the second game to support Battle.net was StarCraft.

References to StarCraft[]

The Secret Cow Level[]

Diablo II logo

One of the more well known aspects of the original Diablo game was something that didn't actually exist. Rumors started of a "cow level" with varying instructions or ideas on how to enter such a place and what existed in this level. Despite Blizzard's claims to the contrary, such rumors persisted, individuals even creating fake screenshots. The issue was finally laid to rest in StarCraft, where the cheat for instant victory is to type in "there is no cow level".

Ironically enough, due to popular demand from fans, The Secret Cow Level actually was created for Diablo II, although this was after StarCraft came out, so at the time StarCraft came out, there was no cow level.

StarCraft References in Diablo[]

Bone wings styled after Sarah Kerrigan available to those who purchase the StarCraft II: Heart of the Swarm collector's or digital deluxe editions, as is a hydralisk sigil and Zerg Swarm accent for the banner. In Diablo III, the achievement for owning the special edition is named "Queen of the Damned," a reference to Kerrigan's title of "Queen of Blades."
A probe pet and Artanis-themed transmog set are available through the digital deluxe or collector's edition of Legacy of the Void. In Diablo III, the achievement for owning the special edition is named "Into the Void."^[1]
Hydralisk and ultralisk skulls can be found in the background of Diablo III acts.
As part of a cross promotion with Heroes of the Storm, players who completed the "Malthael's Bargain" event received Queen of Ghosts Kerrigan wings in Diablo III. The achievement gained for it is named "Ghost Reporting," a reference to the ghost unit quote.^[2]
A Tal'darim probe pet is available in Diablo III for those who purchase the BlizzCon 2017 War Chest.
A battlecruiser pet named Dominion's Revenge is available in Diablo III for those who logged in during the StarCraft 20th anniversary celebrations, as is a Feat of Strength achievement.
An inverted version of the logo appears in Diablo Immortal at the base of the Statue of Resurgence.
The Star Helmet and Star Pauldrons in Diablo III are based off of Jim Raynor's CMC armor's helmet and pauldrons respectively, and has his skull and rattlesnake decals.
A quest in Diablo Immortal is named "Heart of the Storm," which is likely a play on the name of the StarCraft II expansion Heart of the Swarm.

StarCraft x Diablo IV[]

On September 25th, 2025, Diablo IV launched a cosmetic crossover event with the StarCraft universe, featuring purchasable armor and weapon cosmetic sets based off of StarCraft characters, and a number of other cosmetics.

Armor Sets

The Barbarian armor set is "The Rebel Marshal," based off of the CMC-400 powered armor of Jim Raynor.
- The chestplate is named "Marshal's CMC-666," a reference to the CMC designation as well as the biblical Number of the Beast. The Raynor's Raiders logo can be seen on the chest.
- The set's quote is taken from the StarCraft mission "The Hunt for Tassadar", when Raynor addresses Aldaris.
- The set's weapon is named "A Friend in Low Places," which blends a barbarian blade with a rifle. The name is a reference to Raynor's StarCraft II poke quote.

The Druid armor set is named "Heaven's Devil," themed around an infested version of Tychus Findlay.
- The name is a reference to Raynor and Tychus's former squad Heaven's Devils.
- The armor has a Raynor's Raiders logo etched on as well as a female demon in the place of Kyla Velassi.
- The set's quote is taken from the StarCraft II cinematic "The Deal," when Tychus is sealed in his armor.
- The set's weapon, Flesh Grenade, is an infested reference to Tychus's use of grenades in cinematics and in gameplay. The name is likely a reference to his flash grenade.

The Necromancer armor set is named "Overqueen of the Swarm," themed around Zagara.
- The name of the set is a reference to Zagara's title taken in the novel StarCraft: Evolution.
- The set's quote is from one of Zagara's selection quotes during the Space Missions in StarCraft II: Heart of the Swarm.
- The set's weapon, "The Baneling Roll," is a held baneling. This is a reference to Zagara's association with banelings in Heart of the Swarm, Co-op Missions and Heroes of the Storm.

The Rogue armor set is named "The Dark Prelate," themed around Zeratul.
- The set comes with a Marking set named "Currents of the Void," a reference to the Nerazim connection to the Void.
- The set's quote is taken from Zeratul's monologue to Aldaris at the end of the StarCraft mission "The Trial of Tassadar."
- The set's weapon is "Nerazim Warp-blade, the weapon used by dark templar.

The Sorcerer armor set is named "The High Templar," themed around Tassadar.
- The helmet of the set is named "Unity of the Khala," a reference to the Khalai psionic gestalt which are accessed via protoss nerve cords. The helm shows psionic ripples down the nerve cords similar to those seen in the Legacy of the Void introduction cinematic.
- The set comes with a Marking set named "Era of the Executor," a reference to Tassadar's former rank. The markings allow the character to take a more protoss skin tone with the armor.
- The set's quote is taken from Tassadar's monologue to Aldaris at the end of the StarCraft mission "Homeland."
- The set's totem "Khaydarin Pylon," uses a protoss pylon model. It is also a reference to the high templar use of khaydarin crystals to focus their power.

The Spiritborn armor set is named "The Queen of Blades," themed around Sarah Kerrigan in her Primal Queen of Blades form.
- The set comes with a pair of Kerrigan wings available to all classes, named "Wings of the Reborn Queen."
- The set's quote is taken from the StarCraft: Brood War final mission "Omega."
- The set's weapon is a glaive named "Chrysalis." This is a reference to the chrysalis that incubated Kerrigan as she was infested.

Weapons

The "Arm of the Purifier" mace was made available to all players who logged on during the event. It is modeled after a protoss void ray.
The "Heat of Char" polearm was made available to all players who logged on during the event. In spite of its name, the polearm appears to be modeled in the style of the Tal'darim.
The "Parasite Spitter" crossbow was made available to all players who logged on during the event. It is modeled after a zerg mutalisk.

Mounts

The "Zergling Rush" bundle gives the player a cat mount modeled after a zergling. The name is a reference to the common tactic of "zergling rushes" early in matches.
- The set comes with a cosmetic armor named "Advanced Mutation" which applies wings and a variety of zerg tendrils to a mount. This can be applied to any cat mount.

Pets

The Foe to Friend pet gives the player a miniature hydralisk named Sterling.
- The quote on the Foe to Friend page is taken from Dr. Talen Ayers in Project Blackstone, in his notes on Project Tamed.

Trophy

The trophy "Hive Cluster Growth" is available upon purchase of the Zergling Rush mount. It uses the symbol of the Zerg Swarm, with purple glowing elements taken from Primal Kerrigan.
The trophy "Artifact of the Swarm" is available upon purchase of the Zergling Rush mount. It attaches a zerg egg to the mount.
The trophy "Relic of Zerus" is available upon purchase of the Friend or Foe pet. It displays a hydralisk skull, wrapped in lights similar to those on the mounted hydralisk skull in Joeyray's Bar.

Emblems

The emblem "Ancient of the Void" was made available for players who watched 2 hours of Diablo IV streams when the crossover event was active. It displays a Khalai Caste symbol on the profile.
The emblem "The Teeming Brood" was made available for players who watched 4 hours of Diablo IV streams when the crossover event was active. It displays a Zerg Swarm symbol on the profile.
The emblem "Forward unto Dominion" was made available for players who watched 6 hours of Diablo IV streams when the crossover event was active. It displays a Dominion Marine Corps symbol on the profile.
The emblem "My Life for Aiur!" was made available for free for players who logged in while the crossover event was active. It displays the boxart protoss from StarCraft.
The emblem "Marshal the Rebellion!" was made available for free for players who logged in while the crossover event was active. It displays the face of Jim Raynor.
The emblem "Mutation Complete!" was made available for free for players who logged in while the crossover event was active. It displays the side profile of a hydralisk.
The emblem "Organism Unknown" was made available for free for players who purchase the Friend or Foe pet. It displays the front profile of a hydralisk.

Diablo References in StarCraft[]

The observer, if clicked on enough times, will state "I sense a soul in search of answers." This is a line taken from the Diablo character Adria. The Arbiter will react similarly, albeit "We sense..."
Another quote from the Observer is "That sounds like a... a HUGE, GARGANTUAN, SWOLLEN, BLOATED MUSHROOM!" This is taken from the Diablo character Griswold's comments during the Black Mushroom quest.
The planet Abaddon, one of the worlds of StarCraft: Ghost, has the same name as the zone Abaddon found in Act V of Diablo II: Lord of Destruction. Similarly, the setting of the Diablo series is a world named Sanctuary. A region of Shakuras in StarCraft is named likewise.
A Battle.net multiplayer map for StarCraft is named "Diablo" and patterned after the Satanic pentagram motif commonly used in Diablo games.
In reference to the series is the Cineplex 5000 film Diablo-The Musical.
In the StarCraft: Brood War mission "Patriot's Blood," the access code for the security cameras is "Farnham," the name of a townsman from Diablo.

Diablo SC2 Head1 — Diablo worker portrait from the 20th anniversary event.

The Wings of Liberty achievement for talking once to every character is "Stay A While and Listen." This is a famous phrase by the Diablo character Deckard Cain.
The Wings of Liberty campaign cheat code, HoradricCube (which gives the player all research options) is a reference to the Horadric Cube from Diablo.
Diablo himself makes an appearance in the StarCraft II: Wings of Liberty campaign mission "The Devil's Playground".
In the StarCraft II: Legacy of the Void mission Into the Void, a treasure goblin appears on a floating island in the southeastern corner of the map. If attacked, it will vanish into an invisible portal.^[3]
As part of the Diablo 20th anniversary event, all worker portraits in StarCraft II were temporarily changed to be Diablo.