𝐖𝐑𝐄𝐍°•*─

The primarchs don't all look much like their parents (for several valid reasons up to and including warp shenanigans when they were all stolen), but they do resemble each other quite a bit.

Without his wings, Sanguinius can easily be mistaken for Fulgrim- this happens a lot when looking at portraits of their faces next to each other.

Leman, Konrad, Angron, Perturabo, and Mortarion make the same noise when they're unhappy. Something like a low grumble somewhere deep in their chest. It's not the exact same, but it's similar enough.

Corvus and Sanguinius both have something closer to a nest than a bed- something with a lot of pillows and blankets that they can burrow into for safety and comfort

Perturabo and Ferrus have a similar cadence to their voice that can even confuse their own sons sometimes if they can't see which man is speaking

Without their armor, Lion and Roboute have been confused for each other from behind on several occasions

Konrad, Corvus, and Mortarion look the most alike next to Sanguinius and Fulgrim

Angron and Vulkan are the best with babies and animals (I don't make the rules)

Jaghatai, Leman, Horus, Roboute, and 11 have the same laugh (amused huffs and chuckles don't count here I mean a real laugh)

Konrad's cackling laugh is just for show because he hates his real one and is certain others will, too

They all have the same pout face

Sanguinius and Corvus can mimic the voices of their brothers with near perfect accuracy...and so can Alpharius and Omegon

2 is practically a carbon copy of the Emperor physically

11, Roboute, Perturabo, and Rogal are all left handed

Corvus, Sanguinius, Konrad, Leman, Magnus, and 2 all tilt their head the same way when they're confused

Lorgar, Roboute, and Mortarian have similar handwriting

Magnus and Konrad both talk to themselves

All of them are extremely competitive and will absolutely accept any challenge if worded the right way

Have another Horus.

Edit: fixed the nose

A ceramic vessel of striking dimensions, barely manageable even with both hands.The liquid contained within exudes a singular aroma, yet tastes exceedingly bitter upon the tongue.

___________________

Mortarion of the Goat Emperor - The Patron saint of Agri worlds

Atretus and his sons taking another noncompliant world during the Great Crusade! After days of tunneling, trap setting, etc. I think they use a ton of gadgets and quick use items. Atretus is no forgemaster or smith like his brothers Fulgrim, Ferrus, or Vulkan. He focuses instead on making bombs, traps, things that can be left behind

Plus a standard Sandworm Intercessor! Technically he wouldn’t have the studs but…whatever I think the studs look cool XD. Also, I’m working on Atretus’ honor guard…I think he prizes age and wisdom above all else, so his honor guard is purely made up of the oldest vets?

Oviposition.

Fullbody Astyanax with him long ass legs

You menstruate forever for a week every month but Sanguinius is your life partner and eats you out during this + you never have to work more than 20 hours a week ( finances magically balance to a default living wage )