Salpsan is the son of Satan according to The Questions of Bartholomew, Satan and his son here have been interpreted as a counterpart to the Father and Son in Christianity. Although Salpsan was previously considered a possible reference to the Antichrist, authors have linked him instead to the Enochian tradition of the Watchers and their monstrous offspring. He is also compared to Cain in accounts where the latter is sired by the fallen angel Samael after seducing Eve.
"And I [Satan] looked about and saw the six hundred who were under me senseless. And I awakened my son Salpsan and took him to counsel how I might deceive the man on whose account I was cast out of the heavens."