Pale Death

"By all rights, they function as the 'shadow' — a 'Death,' which should never have come into being" The Pale Death (淡い死,Awai shi), also referred to as the Angels of Death, are a special, secretive group that involves the Fantomu  , and its aggregate of  the lieutenant's of each Division.

History
The pale Death headquarters is the 15th Division Barreks. The lieutenants  would gather with the existing commander of the Fantomu Orgization  and aid them  in eliminating all sources of the soul society distress and stamping out illegal acts in the underworld that may affect the human world or the soul society.[2]

They are a highly exclusive group, of low rank cannot maintain as close a contact —  when they were discussing an important case with the commanders. However the captains of the Gotei 13  are able to when they are discussing important cases  from time to time

Mission
The lieutenant's carry out clandestine intelligence operations to collect vital information relating to criminals Acts, and impart such knowledge to the commanders of the Fantomu for them to eradicate said criminals.[2] The vast and elaborate information network stretches from the  to.