Self Insert discovers vampirism at the start of Robert's Rebellion, things diverge from there.

Two transcendent beings summon characters from the Multiverse to watch the darkest universe of them all: Warhammer 40k. "Forget the promise of progress and understanding, for in the grim dark future there is only war. There is no peace amongst the stars, only an eternity of carnage and slaughter, and the laughter of thirsting gods."

Legends, tales passed on from generation to generation, tell stories, of Gods, of Maidens, but very few have ever told the tale of the Crimson King, the slumbering Archangel that watches over Remnant, and fewer still survive to this day. Pyrrha Nikos stumbles across one of these tales, and the fate of Remnant was forever changed. TL;DR: Redeemed!Magnus creates a shadow government.

Following the War of the Thorns and the Battles for Mordheim and Mount Hyjal several hundred Night Elf Sentinels and hundreds of Alliance Pioneers are trapped in the Empire. Knowing that the Horde had formed an Alliance with Enemies of the Empire, Shandris to save her home, and return successfully must convince them to a join a war they do not know yet that they have stakes in.

A very different Mass Effect galaxy encounters a strange and relentless invader that is on constant hunger for Biomass but they never know it's just a glimpse of what coming for them. Featuring: alternative history for every species, a bigger and more populated galaxy, cunning Asari, militarized and germanized human empire.

After narrowly escaping his doom vessel, Ciaphas Cain, his malodorous sidekick Jurgen, and Inquisitor Amberley Vail found themselves drifting through the void awaiting rescue. Unfortunately, they found themselves in unfamiliar waters that will test their patience to no end. With no other recourse, our Hero has to navigate the insanity, or be consumed by it entirely.

Mallus and Elios. Both planets had have their fair shares of battles and horrors, some more than others. But when Mutilator unleashed the Universalia War on the Second Universe, the two planets became united. Alliances will be forces and wars will be waged, and unfortunately it seems like the latter will prevail. For in the Second Universe, only the survival of the fittest matters.

Nazarick shows up in warhammer world in 2400IC after a hypothetical end of Overlord.

What if there was a different reason for Vulkan being a perpetual? What if he was resurrected by a small little ghost, a being of the Traveller. What if? (Vulkan as a Guardian).

A warrior from another world is brought to Equestria, but all he sees is a battlefield in a war he has already lost.

Después de los eventos del portal y el sacrificio de la reina Ángela, algo ha encontrado Etheria y pondrá el destino de dos mundos en las manos de alguien inesperado. Poderes antiguos han despertado. Los Vientos de la Magia soplan y pronto se cernirá una era de horrores y maravillas. De dioses y héroes

The Lichemaster mysteriously dies in a very inconvenient set of circumstances. To salvage the Barrow Legion, one of his acolytes summons a replacement. Fortunately, she succeeded in this endeavor. Unfortunately, he is not exactly what she was expecting, especially considering he was from another world.

Angron - the gladiator king, the butcher of Istvaan, the red angel. Titles that describe the creature the malignant cybernetics sown in his brain made him into, not the paragon of compassion, empathy and hope he was meant to be. This is the tale of if his pod was delivered not to Nuceria's savage lands, but another universe entirely. Here he will be raised, and an Empire will fall.

A crashing ship brings a new empire and a new war with new allies for the Tau. Rated T for violence, death, and profanity

A young lord and his elk in a world not their own with new enemies, new allies... And more to conquer and learn. Along with a interesting figure for the lord. Rated T for violence, death, and profanity. Does NOT follow Warhammer Lore mostly.

On a Feudal World, a lone Guardsman has no idea that her life will be changed forever by a chance meeting a mad man. Can a friendship between xenos scum and noble humanity even be possible? Original Doctor along with original guardsman, for now.

Ciaphas Cain in a brand new episode of screaming in the alien and strange universe of The Federation

Having foreseen a vision of the End Times and its cause, Queen Ariel creates a plan to stop the apocalypse from ever occurring. Sending forth her trustest subordinates, the Sisters of Twilight, and the child destined to become the next Everchosen of Chaos to a new world in hopes that the apocalypse can be averted.

The clone of Fulgrim awakens to find himself to a World of Light. His original Daemon Primarch is invading and he must fight alongside champions he will be proud to call comrades perhaps even lovers. The Chaos Gods and Emperor of Mankind are watching this conflict with their full attention.

The Doom Slayer answers the call of a dying world. The Old World faces extinction as Chaos reigns supreme. With his sword of vengeance in hand, the Slayer enters the world to change the tides of war. No longer will there be the laughter of thirsting gods. Only their screams.

A Taylor kills the Wormverse story. Eventual OOC-Taylor. When Taylor dies in the locker, her soul is cast into the Realm of Chaos. There, she attracts the gaze of the Chaos gods, who seek to make her their champion. To make her their Everchosen.

After his last harrowing adventure and near death experience, Commissar Ciaphas Cain, HERO OF THE IMPERIUM, finds himself 'battling' untold hordes of greenskins that only Slaanesh could love from far beyond The Emperor's reach. Only the new allies he meets on this Emperor forsaken planet can help him escape in one piece and enjoy his retirement. May The Emperor have mercy on them.

The Death Korps of Krieg are renowned across the Imperium for their fearlessness, unshakable willpower, and suicidal devotion to the Emperor. Cut off from their allies and abandoned on a previously undiscovered world, one lone Korpsman is challenged with the most daunting task any Krieger could face: Finding a reason to live.

The universe of the Hammer of War is known for its indifference to the horrors that are happening in it. But the neighboring universe has a very strange sense of humor...

What if Tanya Degurechaff had not been reincarnated in Germania to live an alternative version of the First World War? What if Being X had reincarnated her in a hive-city of the 40k Warhammer universe? And that he had made her a Psyker in a world where this gift is at best seen with fear and at worst with hatred? Yes, her life was not going to be easy, that's for sure.