(A/n: My first Warhammer Crossover bio book version I made so far I probably won't be making a book like this anytime soon with 40k.)

Warhammer x Halo Covenant
_____________________________
Primarch of the Covenant

True Name: Azrael

Titles (over the years): the Father, the imperium's Bane, the Banished Son, the Xeno Traitor, the Pain in the Chaos Gods's Ass, the other Primarchs favorite little brother (before the Horus Heresy happened.), The Wrathful Father,, The Primarch of the covenant , Primarch of Death

Height: 12 feet 2 inches tall (just two feet shorter than the God Emperor himself)

Age: Unknown

Hates: the Imperium, The Chaos Gods, his Traitorous Brothers, the False Emperor, Daemons, Space Marines, Titus, Orks, the Tyranids, the Dark Eldar.

Gifts: Blood of the Last Precursor (gives him immunity to any of Nurgles plagues and poisons, and the Ability to control the Flood to his Will)

Looks:

Weapon of Choice:

The imperium's Bane

Primarch Logo

The Covenant is (by my account in the 41st millennium) 140,852 years old

the Prophets:

Prophets appear to expert complete control over Religious and Political Affairs, thus fulfilling their duties as Leaders. They believe Azrael to be a leader or a child of their God of The Great Journey. When a war is happening Azrael has control of the battlefield. The prophets managed to take allies with the Young Empire the Tau Empire who is only 6,000 years old as the Covenant is over 140,852 years old from the Age of Abandonment to the Dark-Age of Technology

His Gene-Seed Sons:

The Sangheili (Elites)

(A warrior race for several millennia before even the rise of the Imperium of Man existed. When Father arrived wounded but unbroken they let him into their group. Years later when the First Adeptus Astartes arrived "the Father" brought a Huragok (engineer) in secret and found out how they were made before disappearing again. So the Father did the same with all of his children even if they didn't look like him. They were bigger, tougher and stronger and smarter than the average Space Marines. Legends said that one Sangheili slaughtered hundreds of thousands of Space marines before succumbing to his wounds.)

Hunters (Mgalekgolo)
(Code name: Dreadnought Hunters)

Don't let their looks deceive you, they may be made up of Colony's of Worms formed to make the Hunters, they are Bio engineered from the Father to tough in combat, capable of going toe with
A Imperium Dreadnought and coming out either dead or alive. They have either Dual Shields, or a Special Cannon with tech stolen from the Necons capable of completely destroying the target or disintegrating them entirely...

They stand around around 14 to 16 feet in height and are quick at attacking their opponents despite being incredibly big and heavy, they can easily kill anything in their way, the colony would be formed by pairs each able to feel the other. If one should fall in battle, the other will go in a Rage mode and won't hesitate to kill everyone in its way because of the loss of its bond brother. Little is known from Imperium's history Dreadnought Hunters, as the Dreadnoughts from the Age of Unification were easily brought down and destroyed by them. The later Dreadnoughts who fought them called them "The Dreadnought Hunters" seeing them slaughter Khorne's forces as they were paperweight.

Jiralhanae (Brute)

Standing at 2 meters tall (6 feet and 7 inches) tall they are a mostly carnivorous sapient species of the Pseudo-Ursine Mammals they look similar to Large Gorillas, and a Ursine, and Rhinoceros as well. They have a chieftain or a leader of their group, the Higher Ranking Chieftains from their Aggressive and Savagery when fighting against stronger opponents.

Some of Brute Chieftains are also the Fathers chosen to lead against the Imperium's Forces like the Space Wolves or the Ultramarines. One Gene-seeded Chieftain named: Cethegus, a Chieftain chosen by the Father to Fight for his Aggressive and Violent Nature but loved his (gene-seed) father when he was not fighting, is Greatest Rival Leman Russ, Primarch of the Space Wolves, and severely wounded him before ripping and taking his left arm as a trophy.

Covenant Spartan Adeptus Astartes

Unlike the Past Adeptus Astartes created by the Imperium and by the Emperor of Mankind. These were created by The Father and the help of Forerunner and Covenant tech, they are superior to both the Chaos Marines and the Normal Space Marines, they lifespan is extended 2x as long then the normal Space Marines, and superior regeneration and healing. Their powers gifted by Forerunner tech has given them a challenge as they are "Demi-Gods" of the Covenant forces. They are equipped with Energy Shields unlike never seen before, they carry covenant weapons including the Energy Sword.

Not much is known about them but Titus fought against one named Noble 6 a headhunter and was in the chapter of "Sons of Azreal" and with the rank of Hyper Lethal killing hundreds of millions of Space Marines and Chaos Marines alike. Their fight was shot but in the end Noble 6 beaten Titus till he was unconscious and walked away talking his chain sword with him as a trophy.

The Covenant's Grand Army

Kig-Yar (Jackals)

Small and Lightweight they are named "Jackal's" and come from a wild Dog that is similar to a coyote. They are known to carry a Plasma Shield and plasma pistol, and known to experienced snipers, able to hit headshots after headshots with the Particle beam rifle; several unlikely Space Marines fell victim to their well timed shots in dark places. The Kig-Yar are known to scavenge anything from their dead target's from their armor to their experimental weapons like the Imperium's plasma pistol, all which goes into the Covenant which gets used into the Lord's Armor and the Father's weapons which is given to the covenant as a new weapon or one already being used currently.
There are two types: the normal types and the Skirmishers. The Skirmishers are the Female version of the normal Kig-Yar; they are quick and deadly with close quarters combat with weapons like Plasma Pistol, Needler rifle, and the Plasma rifle, and the Plasma Knife. They are normally at the same height as a Sister of Battle of 5ft and 11 inches tall.

Not much is known about them in the Imperiums documents. But Several Sisters of Battle have fallen victim to their deadly assaults including being stabbed repeatedly by the Plasma Blades.

unggoy (Grunt)

The Unggoy or Grunts by many individuals, they are a sapient species of squat bipedal Xeno-arthropod vertebroid life forms, they are the equivalent of Cannon Fodder because of how fast they reproduce at an alarming rate. They have to breathe Methane Gas so they have gas canisters attached to their backs. They are the Covenants equivalent of Orks in how many cannon Fodder you can throw at the enemy until their defenses get overwhelmed and overrun by hundreds of millions of Grunts....

They are smaller than the Kig-Yar standing at 5 feet tall, they are commonly seen holding plasma pistols, needler, and at rare times holding a Plasma Launcher which was used from a Necron Rifle.

Covenant Helljumpers

They are the equivalent of the Imperium's Guardsmen while they don't require a Commissar to lead them, they are deadly in combat, as they are the first to set foot into Hell itself before the Rest of the of the more powerful forces arrive and are equipped with the powerful weapons and equipment which to defend a area so that the Spartan Space Marines and Elites arrive and take the fight against the Covenant to a new level...

Drones (Yanme'e)

The Yanme'e are referred to by some individuals as Drones or buggers, are a race of sentient, carnivorous, flight-capable insectoids. They mostly work in repairing or maintaining ships. They sometimes appear with plasma pistols or Plasma rifles, but those are rare to find nowadays, as they maintain the covenant technology and machines. They were also known at one point to keep Azrael alive in his Death-like state after being fatally wounded by his sister Mortarion (who he and she formed a sister-brother bond until the Horus heresy happened.) who tried to convince her to stay but ended in failure. So after being wounded he turned and walked away holding onto his wound, and once arrived at his throne was hooked up to tech and stayed sitting on his throne for 10,000 years... unlike his father/mother who now stays on the golden throne in his/her undying death-like state.

The Engineers
[who were created by the Forerunners]

Data: (All Files have been corrupted or destroyed)

The Gene Seed Honor Guards

Covenant Spartan Adeptus Astartes Honor Guard looks:

(Halo 2) Sangheili Honor Guard looks:

The Honor Guards are the Loyal Soldiers who guard the Prophets and Azrael, and besides their Armor not as strong or bulky as the normal Sangheili or Space Marines they wear special armor created with the main purpose of protecting and defending their important figure heads of the Covenant.

(Next is Covenant Warships and stuff)