(Disclaimer 1: I do not own Warhammer 40,000. Warhammer 40,000 is owned by Games Workshop)

(Disclaimer 2: I do not own Overlord. Overlord is owned by Kugane Maruyama)

(Disclaimer 3: this is a work in progress idea as I have not had the opportunity to watch the anime and I don't want to make an ass out of myself and end up getting anything wrong. Despite not watching the anime or reading the light novel, I've become fascinated with overlord through reading fanfictions, seeing scenes of the dubbed version on YouTube, watching a lot of lore videos and exploring the Overlord wiki. I intend to get my dumb little hands on seasons one through three on either Blu-ray or iTunes sometime in the future. This will be my first fanfiction so it may suck regardless.)

I plan to write this fanfic for several reasons:

1) A crossover between Anime overlord and the Warhammer 40,000 universe sounded pretty cool to me.

2) I like 40 K fanfiction's that are from chaos's perspective since I'm a Chaos fan. Specifically, I'm a fan of the Traitor Guard. Death to the False Emperor! Vote Abbadon for Emperor in M-42! LOL! J/K God, I hope we get a codex.

3) It's a pain in the butt to find 40K fanfics where you have characters that are from the real world being shoved into their favorite science-fiction franchise.

4) I don't think I've ever seen a crossover fanfic (besides The Multiverse Project series by TMO MelonMaster. Great fanfiction series by the way. Definitely recommend it.) where you have characters from the real world who are familiar with both intellectual properties.

5) I'm a little tired of 40 K crossover fanfics that are simply just "40 K invades *insert other universe here* and kicks its ass LMAO! :P" because I find them repetitive and boring. (No offense). In other words: Im'ma go all, Commissar Gamza up in this motherfucker! This is the reason why I'm not going to have the Forces of Chaos go to war with the Sorcerous Kingdom of Nazarick. Instead, I'm going to have them work together to fight off the Loyalists, Orks, Tau, Tyranids, and Eldar in a 6-way conflict for the New World. Ainz sees The Chaos Forces as a weapon to further his goals in the New World. Neither he or the NPCs worship the Chaos Gods. The Chaos fallow Ainz's orders because of a Black Legion prophecy of him being a emitter of Chaotic energy.

Some of the chaos warbands (5 traitor guard militias) interested in the New World are either from the Black Crusade RPG created by Flight Fantasy or completely fan made by me.

This chaos sub faction I've come up with is known as the "Unity of the Vortex". As their name implies they hail from the warp rift known as the screaming vortex (setting in the Black Crusade RPG). they are made up of five so-called congregations that each consist of a Chaos Space Marine Legion, a Chaos Renegade Militia, a Chaos Warfleet, and a fleet designed for sea battles referred to as rogue maritime armadas.

Each warband has an individual known as a Past Dweller. These are ancient humans originating from the third millennium who through unknown means have been accidentally teleported into the 42nd millennium.

In reality they are from the real world and are all hard-core Warhammer 40K chaos fans and they are also hard-core overlord fans. The Past Dwellers are given special tutelage from the leaderships of each warband and after coming to the New World they are also to accompany the Guardians as they work alongside the congregations.

The congregations are known as:

the Empire of the Undivided Temple

-- follows chaos undivided and worship all four of the dark gods. Their forces consist of the following:

Chaos Warfleet—The Fleet of Righteous Ruin (purely fan made): former Imperial Navy sailors corrupted by chaos.

Chaos Space Marine Legion—Burning Eye Legion (mentioned in Black Crusade RPG/fan lore added by me):

this Legion was founded by a former Night Lords Aspiring Champion named Malich who went about his way as its founder and sole member, however after meeting with a former Dark Apostle of the Word Bearers Legion named Bolmerek, the Burning Eye Legion rose to providence. Eventually Malich added the title "Despairion" to his name. He then founded the Unity of the Vortex and after gaining influence over four other chaos space Marine legions, five chaos renegade militias, and their allies, the Dark Captain swore fealty to the Lord of the Black Legion himself… Unfortunately, the founder of the Burning Eye Legion cannot lead such large military force on his own and has decided that he would need guidance. Knowing that the unity is quite useful in his black crusades, Abbadon the Despoiler who has given Despairion orders to send at least all five traitor guard militias to the surface of a feral world the Loyalists pigs have dubbed "Yggdrasil Prime" and to meet up with a local king known as Ainz Ooal Gown. The goal is to have Ainz become the supreme commander of the Unity. The chaos space Marines are then to depart for Vigilus and let the traitor guard take Yggdrasil Prime with maritime support and naval support.

Color scheme is designed with a black helmet, the upper torso of the power armor is grey with blue arms and shoulder pads and the lower torso is red.

Key figures besides Malich

Master of Possessions: Jun'Mal the Daemon Caller (purely fan made):

a former white scars librarian who has an addiction to causing absolute fear in the enemies of chaos. He is Fanatically devoted to the code of honor created by the past dwellers (which is the ONLY reason why the unity of the Vortex doesn't kill human civilians but instead leaves them to fend for themselves unless they swear fealty to them. as a result of this code they actually managed to convince the populations of the planets they invade to turn against the imperium. However they have changed this rule where they spare civilians unless Ainz tells them to do otherwise.)

Dark Apostle: Bolmerek the Enlightened (purely fan made): veteran of the Word Bearers' unsuccessful attack on the Boros Gate led by the Dark Apostle, Marduk, Bolmerek has become somewhat of a religious teacher for the Burning Eye Legion and its traitor guard ally, the Holy Oath.

Past Dweller of the Burning Eye Legion: Kevin Martinson known as Ketarus (purely fan made… Obviously)

Chaos Renegade Militia-- Holy Oath (mentioned in Black Crusade RPG/fan lore added by me):

made up of what was once the entire Cadian 13th Regiment. They turned during the 13th Black Crusade on Cadia. Known for their tenacious behavior on the battlefield.

Wear uniforms identical to the uniforms worn by the traitor guardsmen in Blackstone Fortress. Squad leaders wear red berets.

Key figures

Demagogue: Grand Bishop Gabriel Haung (Quoted in Black Crusade RPG/fan lore added by me):

a deeply religious man, the past dwellers have managed to steer him away from being too fanatical by 40K standards.

Tribe of Boiling Blood

-- follows the Blood God, Khorne. Their forces sent to the New World consist of the following:

Chaos Warfleet— Tide of Carnage (purely fan made by me):

fleet made up of abandoned Imperial Navy sailors who've embraced the bloody doctrine of the Lord of skulls

Chaos Renegade Militia-- Skull Hunters Combat Regiment aka Skull Hunters (purely fan made):

Former members of the Catachan Jungle Fighters Regiment, the Armageddon Ork Hunters Regiment, and the Kanak Skull Takers Regiment. After fighting in the jungles of the hive world of Armageddon, these guys eventually went insane and then fell to the worship of Khorne. They immediately attacked both Imperial and Ork alike. They have had a hatred for Orks ever sense viewing them as one of the two archenemies of the Blood God.

Uniforms are a mashup of Ork Hunter, Catachan and Kanak uniforms with feral world talismans, as well as chaos and Khornate iconography.

Key figures

Demagogue: Rorick the Bloodbather: born on Catachan, Rorick is somewhat unpredictable. Appearing calm and collected at one point the and foaming at the mouth the next. The only ones who are spared from his outburst are the denizens of Nazarick whom have earned his respect. Due to this, he fanatically claims That they are "daemonic saviors sent by the Dark Gods themselves." And that the Blood God has willed that he and his fellow Skull Hunters kill as many enemies as possible because any enemy of Ainz Ooal Gown is an enemy of Khorne.

Infernal Sanctuary

followers of Tzeentch the Changer of Ways. Their forces sent to the New World consist of the following:

Chaos Warfleet: The Changing Fleet (purely fan made by me):

chaos fleet that broke away from the thousand suns during the Horus heresy.

Chaos Renegade Militia: Free Systems Coalition aka Free Systemers (Quoted in Black Crusade RPG/fan lore added by me):

traitor Regiment consisting of Hyspasist infantry from their home domains Legiones Skitarii force and armored and artillery regiments from local PDF. Wears desecrated Imperial Guard uniforms with dark red armor, desert tan fatigues and skitarii vanguard helmets.

Demagogue: Grand Marshal Angelica Benoint (mentioned in Black Crusade RPG/fan lore added by me):

female cyborg guardsman turned Tzeentchian warlord. Views chaos as mankind's only path to freedom.

Creed of Filth

Worships Nurgle the Chaos god of decay

Chaos Warfleet: the Star Plague (purely fan made)rotting space pirates who hunt hive fleets

Chaos Renegade Militia: the Brood Monks Brotherhood aka Brood Monks (purely fan made):

Genestealer Cult of Nurgle who use guerrilla warfare to spread disease to their foes.

Uniform is either imperial mining armor or imperial guard flak armor

Demagogue: Brigadier-Primus Dimitri Von Trouge Cohaine(purely fan made by me):

chaos corrupted Genestealer Primus dedicated to the plague God. Speaks in a slurred raspy voice. Often engages enemies in close combat so he can inject them with poisons.

Denomination of bliss

followers of Slannesh the dark Prince. Their forces sent to the New World consist of the following:

Chaos Warfleet— Pirate Fleet of the Ragged Helix (featured in Black Crusade RPG/a little bit of fan lore added by me):

pirate fleet that completely devotes itself to debauchery and hedonism.

Chaos Renegade Militia: True Emperor's Liberation Front aka Emperor's Partisans (purely fan made):

former Imperial guard penal Legion that escaped from their prison world and later joined the unity after embracing Slannesh, becoming pirates and fleeing persecution by the Ynari. (Slightly comical note. As , the Emperor's Partisans get somewhat scaroused by Shalltear, Albedo, and Solution.)

Wear prison outfits and leather greatcoats with bandannas.

Demagogue: Pseudanor (featured in Black Crusade RPG): extravagant space pirate. Cocky, Arrogant and full of himself.

DISCLAIMER!: Sorry if it seemed a little half-assed towards the end as I'm trying to get this little idea thingy finished before I had to bed. Lol!

Also, I'm not going to make either side too overpowered. I think they're already overpowered enough! Which is why both overlord and 40K are awesome! By the way even though it's going to be a while before start this thing off, I was thinking of having the Pleiades be assigned to the command squads of the traitor guard forces, maybe one or two per militia. Based on either their personalities or abilities. I could also choose to have this gimmick applied to Shalltear, Albedo, Demiurge, and Sebas as well. If not, then I'll just have them alternate between militias depending on their orders.

Solution would probably be working alongside the True Emperor's Liberation Front. Lupusegina is also a candidate for them due to her sadistic nature and sadism is a quality Slaaneshis often display. Though, I think that Lupusegina could also be assigned to the brood monks brotherhood due to her jovial personality as the brood monks brotherhood worship Nurgle who is known for his joviality.

Entoma most definitely would be assigned to the brood monks brotherhood because…. Well…. Bugs.

Yuri would be most likely assigned to the holy oath because of them being the leading force and her being the acting captain of the Pleiades.

But I want to see what you folks think. So if anyone is familiar with both overlord AND Warhammer 40,000. Which Pleiades fit which militia? Should I have it apply to Shalltear, Albedo, Demiurge, and Sebas?

Let me know.