Personal Headcanon

>Cadians all have outrageous canadian accents, like this level of outrageous: youtu.be/5vuLmIWjp1M?t=5m40s
>Cadians cannot socialize with Imperial citizens, as having their entire life being training and soldering, they can't relate to citizens and can't function well in a social setting that doesn't involve other soldiers.

But how fucked do you think everyone else would be if it happened tho?

...what's so outrageous about that accent?

But i also mean, use it an assimilate it for the hiveships

His RAGE clearly

LCB is canon
Kitten and Shadowsun still love each other

I like the theory that Magnus is the Blood Raven primarch, or that they're Thousand Sons successors / made from recovered TS geneseed.
Think about it. They have a high number of Psykers and Librarians for a post-heresy chapter, they have an obsession over relics / ancient tech / warp stuff, and they wear red.

Are they also overly polite?

Everything in the HH books is an alternate universe that has nothing to do with the main 40k setting.

Blunt as fuck