So I heard Bradford, Shen and Lily talk about these advent burgers. They're made from synthetic meat but there's a lot of people that say they're made of people like soylent green or cloned meat. But I remember a scene from an episode from Teen Titans. It was called Employee of the Month where beast boy had to work at a restaurant called Mega Meaty Meat.

http://sendvid.com/e2zrg6ji

Replace the creepy shape shifting manager with a faceless and boom. Advent burgers are made of the flesh of the faceless.

5081694 They now deliver:

I think it's the other way around.

The Faceless are made of the remains of spoiled ADVENT burgers.

There's a factory area that can pop up in urban missions, and Bradford remarks that he thinks that's where the ADVENT burgers come from. Meat comes out, but you never see any livestock going in...