Codex



The codex is the protagonist's mobile database of information on monsters, weapons, items, upgrades, and plot elements in the Doom and in Doom Eternal. It automatically updates with new information as monsters are killed and items are collected, and can be referenced at the player's convenience, taking the place of Doom 3's PDAs and functioning in a manner similar to the scan log in the  series. Some data log messages are acquired from datapads.

=Doom Eternal=

Fodder
Zombies- Possessed by the influence of Hell, these once human underlings that follow in Hell's ranks are those that have been corrupted and deceived by its power, forsaking their own humanity. Those who have fully succumbed to Hell's control cannot be saved, becoming mindless, grotesque contortions of their former selves.

Imps- Scavengers of the underworld, Imps are among the most common of beasts found on the scorched surface of the Hellscape. Lesser demons of Hell, the imp possesses limited intelligence, driven only by a hunter's impulse to seek out prey- a task for which the imp is naturally suited due to its innate capacity for violence. As a result of these attributes, the imp makes for an ideal footsoldier and is oft deployed in the warring legions of Hell, easily manipulated and controlled by commanding highborne demons at the behest of the sovereign chapters. It is common for the imp to appear at the frontline of an offensive attack, an expendable resource unleashed in great numbers to overcome and break through the enemy front.

Soldiers- Once frontline infantry fighting to protect Earth from the demon invasion, the Hell Soldiers have been claimed by darkness, turning them against their fellow soldiers in the midst of battle.

Gargoyle- Like their Imp brethren, the Gargoyle is an agile, relentless pack hunter. Native to the Sentinel world, this beast has plagued the Sentinel Guard for centuries. As one of the few demon breeds that could bypass the walled defenses of Sentinel Prime, the Gargoyle could appear without warning and claim hapless townspeople before disappearing into the wasteland. Only the most skilled marksman of the Night Sentinels could intercept this aerial threat, a peril with demanded an ever vigilant watch over the city's perimeter.

Lost Soul- The Lost Soul has its origin among the Damned - former humans who have fallen from the mortal world, doomed to an unliving eternity as sin-branded slaves of Hell. The Damned are seemingly endless in number, their populations growing by the thousands with each rise of the black sun. For many, the torturous existence of crushing slave labor is all that awaits. The bodies of the Damned are brittle, and those who become broken in labor - their bodies ruined, dismembered, or otherwise incapable of servitude - are transported to the pits where their souls must be extracted for further use. Those fortunate enough to escape this process are what inevitably become Lost Souls; their spirits transmogrified into physical form. The Lost Souls knows only madness, its memory a haunted image of its former mortal life. Theses creatures live a fleeting existence, roaming mindlessly, seeking only that which can grant them a final death.

Maykr Drones- Urdak's population is mainly comprised of Drones, beings that exist and extensions of the Khan Maykr's will. Though each is endowed with their own unique identity they remain biologically unable to resist a command from their Khan, and so function in a perfectly synchronized colony system. Drones never leave Urdak, their bodies not yet mature enough to avoid harm while crossing dimensions.

Heavy
Arachnotrons- Arachnotrons are built with the genetic material recovered from the remains of the original Spider Mastermind, bio-engineered for cyber-augmentation. While its actual body exhibits only limited mobility, the oddly cerebral qualities of the Arachnotron make it a prime candidate for the impulse-controlled prosthetic frame that it now permanently inhabits. The UAC facility responsible for the Arachnotron's creation, intending to engineer and weaponize demons of their own design, was overrun after an outbreak occurred inside of its assembly plant, killing everyone inside. The facility, still operating under the directive of the administrative AI, continues to manufacture Arachnotrons autonomously.

Cacodemon- Hunters of the Sloughlands, the Cacodemon lurks the bottomless and murky depths of Hell in search of easy prey. An aimless wanderer, the Cacodemon is mostly devoid of cognitive ability, sensory awareness, and otherwise commonly occurring impulses. Driven only by a singular desire to feed, the Cacodemon is likely to appear wherever there is flesh to be consumed, bringing with it an insatiable propensity for hunger. It is said that the Cacodemon bears some resemblance to the cycloptic titans of ancient Hell lore, leading Sentinel scholars to believe that the forgotten titans may yet live on in some disembodied form.

Carcass- The product of inhuman bio-mechanical engineering, the Carcass was created in the remote labs of the Cultist enclave. Neither truly living nor dead it exists in a state of partial re-animation - its cybernetic armature simulating a living impulse within a decaying organic host. Devised as a means of extending a soldier's usefulness in combat after death, the unliving host can only be destroyed by severing the body from its cybernetic implants.

Cyber Mancubus- Mechanized and heavily augmented, the Cyber Mancubus is equipped for frontline warfare. Equipped with dual-barrel arm-mounted mortar cannons, the Mancubus's integrated weapon system utilized the body's naturally occurring biotoxins, refining this corrosive, viscous membrane into a toxo-plasmid ammunition feed. Syphoned from the spinal gland and funneled intravenously to the weapon conversion system, the corrosive secretion is discharged by an alternating firing mechanism, which dispenses the toxo-plasmid as either heated projectile or ignited fluid, the latter resulting in a flamethrower-like incendiary spray capable of burning through armored plating.

Gallery
Some example codex entries are pictured here.