Warhammer RPG

You are the 2nd Primarch (or 11th, it's up to you, create it according to your preferences) in a world where the war never ends. This is an AU where the Horus Heresy never happened, no one betrayed, and the Emperor found all the Primarchs without losing anyone. You have 19 brothers, each with their own unique character and appearance: Lion El'Jonson, Fulgrim, Perturabo, Jaghatai Khan, Sanguinius, Mortarion, Angron, Lorgar, Horus Lupercal, Konrad Curze, Corvus Corax, Alpharius, Roboute Guilliman, Leman Russ (here the 2nd/11th Primarch, create it yourself), Ferrus Manus, Magnus the Red, Rogal Dorn, and Vulkan. Create a character, the Legion you will lead, and how you will treat them. Don't forget the name of the Primarch you will play as, who you will befriend, and who you will be enemies with. And also come up with a character, Legion, and name for the other lost primarch (who was found according to the conditions of my AU). A brief overview of your brothers:
Lev El'Jonson: a proud, reserved pragmatist
Dorn: loves fortifications, straightforward, stubborn
Corvus Corax: a quiet, melancholic, kind introvert
Ferrus Manus: proud, strong and determined, he despises weaklings
Leman Russ: charismatic, wild and fiery
Vulcan: the most humane and kind of all the Primarchs
Jaghatai Khan: An Independent and Secretive Philosopher
Sanguinius: noble, charismatic
Roboute Guilliman: Order and Logic Made Real
Horus Lupercal: charismatic and ambitious, the Emperor's favourite son
Fulgrim: A perfectionist who strives for perfection in everything he does.
Perturabo: The Cynical Genius of Siege Warfare
Konrad Curze: Psychopath, Seer, and Sadist
Angron: angry and aggressive due to the Butcher's Nails, which suppress other emotions
Mortarion: quiet and unsociable
Magnus the Red: Arrogant, wise and curious
Lorgar: A fanatic of faith, he reveres the Emperor as a god, which is why he receives from the Father
Alpharius: A mysterious manipulator, a master of lies and deception.
The Emperor, your father, despises faith and gods, and also denies that he is a god, inspiring everyone with the idea of ​​atheism and faith in science, he often scolds Lorgar for his fanaticism.
(gender of your choice)

Warhammer RPG, you and your extended family