Silimar, Perun, Timur, Radegast, and Skorri. 5 out of the 9 iron lords are shrouded in mystery. These 5 iron lords died in SIVA Chamber in the Plaguelands centuries ago. Or, did they die? I have reason to believe that they aren't dead. The chamber was destroyed by the second explosion made by our Guardian. But I don't think one of the three that were infected died. SIVA has the ability to make an organic/mechanical compound that works as a regenerative gene. I have reason to believe that Felwinter or Jolder survived the explosion. Because we killed Sepiks Perfected once and it came back to life. No one really knows SIVA like Rasputin and the Brey family. But knowing that SIVA can take a hit from an explosion, who's to say that it's destroyed. But back to the main topic, the 5 iron lords that were never found in the chamber, I believe that their minds combined into one and taken the form of one of the three infected. SIVA is a strange technology. It needs to be understood by someone who knows it. Or dare I say, someone who was made by its same creator. I just have a feeling that Felwinter may make an appearance in Destiny 2. Because I felt that Felwinter was supposed to control SIVA to build Clovis's legacy literally straight off the ground. But fate took its course and he was found by the light, died his final death and was reborn from SIVA then "died" again. Once you are infected with the SIVA, you are apart of the SIVA. So, either the other iron lords died, or my theory stands to be that they all share the same mind in one body. What do you think?