|Real name:||Joseph Blackfire|
|First Appearance:||Batman: Arkham Knight (Batman: The Cult #1)|
|Created by:|| Jim Starlin|
|Portrayed by:||Marc Worden|
- "I am the messenger of truth for the Lord hath anointed me with His sacred oils. He hath separated me above all and promised me and my children their rightful place in the new kingdom."
- ―Deacon Blackfire's sermon[src]
Blackfire had amassed a cult of Gotham City's homeless who accept his fanatical beliefs that the world's end was nigh and those who accepted him would be the ones to survive. He took part in human abduction and sacrifice, and believed the way to achieve immortality was to bathe in human blood.
Deacon Blackfire was the antagonist in the Most Wanted Mission, "Lamb to the Slaughter."