Lucifer the fallen angel

I just cant COMPREHEND how Lucifer isnt one of if NOT THE most talked topic about ultrakill lore right now, its almost CONFIRMED that we will find him somewhere in the game, he IS on Hell, AND was revealed on one of the best lore sources we have, I feel like he is the fraud boss and perhaps the yellow arm giver, and if he genuinely doesnt appears or isnt atleast mentioned again, I will be very mad at Hakiter...