A/N: Hey guys so this is just a brief background on what this story is about just so ya'll don't get confused thanks.
Sons of the Primarchs:
Sons of the Primarchs were created by belisarius cawl,roboute guilliman and chapter master dante In 033 M42 when guilliman and cawl were attempting to clone Sanguinius out of his remaining genetic material this went wrong and the "clone" was nothing like sanguinius having brown hair and cyan eyes and no angelic wings as opposed to his father's blond hair and blue eyes guilliman at first wished to kill this clone while it was still in infancy because of its genetic mutations however cawl and dante argued against it as this child was perfect to become an astartes. Upon further inspection they found that the child had angel wing birthmarks on his back.
Dante immediately recognised the true nature of this child as there was an ancient prophecy that stated that one day the aire of sanguinius would come to be. Dante realised that this child was the aire to the throne of the Blood Angels. After Dante left with the child and his sanguinary guard for Baal guilliman immediately decided that every legion should have an aire and told cawl to create them immediately.
They are as follows
Dark Angels: Lloyd
White Scars: Zane
Space Wolves: Skhal
Imperial Fists: Kai
Blood Angels: Giovanni
Iron Hands: Marco
Ultramarines: Cassius
Salamanders: Jay
Raven Guard: Xavier
Since the children all have primaris organs they fight in primaris armour
All of these sons of the primarchs fight as lieutenants in their chapters 1st companies except Giovanni he serves in an intercessor squad in the second company much to Dante's confusion.
Mutations amongst the children:
Giovanni's Mutations:
brown hair and cyan eyes, does not age after 18 years old,possible perpetual
The rest of the children seem to be fine and show no signs of mutation yet but it may be to early in their life to make the final conclusion.