Deadfall had been a mercenary who had fought in both mortal and magical wars. He had once been a friend of Vaurien Scapegrace, although he did not like him very much. He won Scaegrace's pub off of him in a poker game. It is known that he has a sister, and Scapegrace might have been involved with her before he left Roarhaven. This is probably why he hated him, and he gets very angry when Scapegrace mentions her.
Scapegrace tells Skulduggery and Valkyrie that the pub he onced owned has an area in the back. They travel there and meet Deadfall, Hokum Pete amoung others. They get into a bar fight with Skulduggery and Valkyrie and end up losing.
Deadfall meets up with Scapegrace along with Hokum Pete and Brobding and some other sorcerers in Scapegrace's old pub where he is auctioning the location of Skulduggery Pleasant's house. Tesseract arrives and kills him and the others to force the information out of Scapegrace.
Deadfall has the ability to change his fists into sledgehammers.