Posted Jan-21-2017 9:41 AM
In the original plans for their fire and stone comic,dark horse comics were going to showcase the Deacons.But for some reasons they did not include them at all.Instead we get to see some simmilar creatures in the comic like the Deacon-sharks,and what happened to the Deacon that bursted from the Engineer at the end of the Prometheus film.The Deacons did appear on the front cover of the AVP Fire and stone comic but before the comic hit the store shelves they were replaced by the xenomorph warriors.Usually before publishing anything 20th century fox reads and checks the products, such as books based on movies.If they don't want or like something they tell the authors to remove or replace it (and they are really strict).I suppose that they didn't want the Deacons to be shown in comics because I presume they had plans for it in the future films and wanted to see how is Ridley going to handle it first, I don't know.
The authors of comics did contact Ridley Scott for the ideas for comic.
Down here are many unused concept designs for the Deacon creatures,featured in Prometheus: The complete fire and stone.
"Human heaven? Goodness, humans don't go to heaven.
Someone just made that up to prevent you from all going nuts."
- Kryten, Red Dwarf S3E06 "The Last Day"