Azrael is the name of several fictional superheroes in the DC Comics universe. They are a group of assassins who were created by The Order of St. Dumas to "enforce God’s Will." The name is taken from the name for the traditional Angel of Death.
3 – Azrael – Death’s Dark Knight (2009) #1-3
4 – Azrael vol.2 (2009-2011) #1-18