We wanted to turn humans into zombies ...And zombies into Deadpools... All so the different splinter groups would have enough members for their softball league or whatever. 
History
The Deadpools were created when the original Deadpool sacrificed himself by drinking a sample of his blood with similar properties to the Hunger Virus and letting the zombies eat him. The ones who did were turned into Deadpools, as if a part of his essence lived on in every zombie-turned-Deadpool.[1]
However, the Deadpools, instead of protecting the humans from the zombies as he wanted, rebelled against them, turning the humans into zombies and zombies into Deadpools by making the zombies eat one of them, just like the process that birthed them. However, one of them was against the idea. When he sacrificed himself by entering a Deadpool-killing machine, he brought an infection to the others that destroyed 99% of them. Liz, a survivor that had befriended the outcast Deadpool, realized that there were other remaining Deadpools out there, so she took the alias of Deadpool and decided to kill the rest of them herself.[2]Paraphernalia
Weapons
Various swords and guns
Transportation
Deadpools' train, Deadpools' Horsecars