When Kylo Wren was stripped of his title of God of War, he piled enemy heads into a throne and used madness as a sacrifice to awaken the sleeping "Ark of Bones". Arya tried to save him from consciousness, Tal Mok tricked him into restarting the annihilation agreement, and Sif Zero used his skull to spell out the coordinates of the galaxy cemetery - and in that ship, there was a 'Zero larvae' condensed from the brainwaves of a hundred thousand dead warriors. He is neither a hero nor a villain. He is the last mad priest of galactic civilization. He uses the skulls of his enemies to get back the glory that belongs to him and has been tampered with for a long time.