I love the Fallen. I started reading the grimoire cards and just needed more. I have thought of multiple theories about them. Cabal are brute force, Hive are just insects. Crota was a little interesting but still not much. Vex are this crazy reality-bending mass that I am also intrigued by. But the Fallen are my favorite. I believe from the cards that kells are actually like kings or just the higher ranking Fallen. Above them there is the servitor and archons. Servitors seem to be the king or mini-god of the Fallen. Then the archons either being the ones who tend to the servitors and/or worshipers, or they are the ones who give the commands to the servitor. Which I think is a bit more likely. I also would like to know about size relative to status. Since the bigger they are the higher they are. Which is this is a military social hierarchy then they work their way up. This means either 1. Something happens when they are promoted that stimulates growth (a material handed down from higher ranking members), or Fallen grow over time and can live for long periods. This would also mean that those who become older and do not advance are most likely banished or killed. The other possibility is uriki style. Vandals are lower on the chain, and can become barons or dregs. Their is another portion of the species that is larger (Kell) and usually being the strongest they can battle the previous kell and take control. I would assume that kells could also be promoted to Archon in this scenario. I would love to know more about the Fallen. I would also love some feedback on my theories.