Bruce stared at him before repeating the mantra and kneeling. "All roads lead to Barbatos." This wasn't fear toxin, this wasn't a freak or a lab based monster.  This was older than Ra's then the demons head himself..  It was massive, a demonic bat monster that could corrupt and influence.Older than creation and responsible for so much darkness.  If it was telling the truth than it was responsible for Bruce's entire life, his destiny.. His reason for becoming the Bat, the monster.  Claiming in this way he was Bruce's true father..

" Yes. The truth is you are NOTHING without me. You are plain, less than plain. This place, my realm, it is full of worlds created from fears and failings. And you...you have MORE than any other hero, my son. Whole galaxies of worlds built by the unspoken terrors in your heart. I showed you three but there are thousands. Look around you. People think you are a great hero of humanity. Maybe even the greatest. They strive to be like you, all because I willed it. So when your nature was revealed, they would shrink back to the dark. Now look! Look!!! Because THIS is who you are without my help!"  

Bruce listened to every single word not daring to disagree. This was the monster that planned his plan.. The thing that couldn't comprehend good.. Who wanted everyone to be the worst possible version of themselves.