Vileness is a corruptible essence that originates from The Darkness.
Chapter 04: Sariel's DeceptionEdit
Chapter 08: Belial's DeceptionEdit
Armaros travels into The Darkness in order to rescue Enoch and Nanna. He soon finds Enoch who has succumbed to the vileness. He defeats Enoch and frees him of some of the corruption, but this angers Belial who launches a wave of vileness at the pair.
Lucifel rescues Enoch and leaves Armaros to be consumed alone.
Chapter 09: Enoch's IndecisionEdit
Chapter 10: The Grave of ArakielEdit
When Enoch reaches the end of Arakiel's floor, he discovers Ishtar and Neph. The former is covered in vileness yet Ishtar urges Enoch to deal with Ezekiel first. During Enoch's battle with Ezekiel, Ezekiel uses the vileness to transform into a more powerful being. She still loses to Enoch, however.
Chapter 11: Semyaza's DreamEdit
During Enoch's battle with Azazel, the latter uses the vileness to transform into a bug-like creature. Enoch also encounters Armaros, who has succumbed to the vileness. After their fight, Enoch purifies Ishtar of the vileness clutching to her.