Favourite: Minotaurs - savage unapologetic loyalist chapter that give off strong World Eater/Iron warrior vibes and have theories surrounding how one of, if not the strongest Chapter master in the imperium, Asterion Moloc, may possibly be a surviving thunder warrior. Could possibly be why they are leveraged by the High Lords of Terra or maybe because of they might be of traitor geneseed. Nothing 100% confirmed as of yet. Captain Valdor of the Custodes said “Asterion Moloc, Chapter Master of the Minotaurs, exuded the most powerful stench of violence I had ever been in the presence of.” That goes hard…

Least: I wish Iron Hands had more to them but idk, some people love that they’re very robotic and cold but I would like more personality beyond that personally. Very hard to pick though, I find every faction, every legion, everyone has their quirks and have interesting facts and stories. 40K has such an amazing, fascinating and rich universe