After the Horus Heresy. The Emperor of Mankind in his last ditch effort to keep The Imperium going he gave his successor his powers and most importantly his life so he can rebuild the damages to the Imperium. But what he didn't know that this will cause a shift that will change the Galaxy Lucien, Now the Emperor's Successor must change the Imperium, The Galaxy or maybe the universe all together to fix its problem, with his army, his cold logical words or by force

A space marine name Carlos Aurelius belonging to the Ultramarines Chapter, an Astartes who is favourable by all the daughters of the Empress, the Primarchs. He is the one who united the sisters as one and treat each other as equals and family. In turn they treat him as their own little brother. But soon it changes when the Empress suddenly declared Carlos to be banished from the Imperium for eternity for reasons were unknown. Outrage by the Empress declaration, the Primarchs demanded reasons but Brother Carlos accepted it in which caused the Primarchs to be bitter. There he was escorted out of the Imperium by the Adeptus Custodes before giving a last fare well to the Primarchs. However all turns to worst as he was assaulted by warp spawns from the immaterium, heavily injured and battered armour he makes a last stand against the demonic beings until he found himself in a different universe, will Carlos able to return one day to the Imperium or travel through the multiverse seeking adventure and friends along the way. A/N: I don't own anything.......

This story is about Lysander, Primarch of the 2nd Legion. When he and his Legion were send through the warp, they didn't expect to arrive in another familiar yet different reality. How will they fare, will Lysander be able to stop the Heresy that happen in his universe, or his genderswap family, who have develope romantic feeling for him. Lysander: I did NOT sign up for this

A genderbent version of the 40k universe. This is a smut 18+

The Empress of man had created 20 Primarchs to be her generals and leaders during the great crusade. Each one had there own unique and special abilities. However something went wrong and a extra primarch was born, the man YN LN would lead the 21st Legion against the horrors of the galaxy. Can he bound with his fellow warlords and unite the galaxy, or will he watch it burn?

I've been reading up on the Titan legions of 40k and wanted to write my own Titan legion.

I don't fully know everything about Warhammer 40K but I really wanted to try a harem fanfic