History
Friday is the leader of the Sons of the Last Flesh, a pseudo-religious order that believes human flesh needs to be augmented to deal with the extreme changes/damage caused to the earth by humans. Many members are cyborgs but some have undergone more genetic/mutagenic modifications because of Friday’s manipulation of the Psiot Eidolon.
They originally used Eidolon for their purposes but she was rescued by Bloodshot. They eventually tracked her (and Bloodshot) to a horror convention in Florida where the Sons of the Last Flesh fought Bloodshot and members of Black Bar.