Fan Casting "The Demon" in Justice League: Apocalypse

After John Stewart made the ultimate sacrifice and killed Darkseid using all of his power (which ultimately caused his forces to be destroyed by the explosion that also killed him) Bruce Wayne, seeing his injured he was, passes out from losing much of his blood. However, he later wakes up, shirtless and shackled against the wall of a cave, before seeing two figures, one being a wisened man wearing green and gold robes, the other wearing a dress with regal red roses on it, who also carried perfume containing an orange type of gas inside. The man then says, "Hello, Bruce Wayne. I've been waiting to meet you for a long time, especially now that my daughter has found her soulmate."