Arthur Harkness

Arthur is the son of Captain Jack Harkness and an unknown woman from a one night stand. Since his father didn't know about him Arthur was raised by his mother alone and hated his father. He became a self centered cruel character partly because he was the bastard child of a father who he believed did not want him. He was neither on Enchantra's side nor the Resistance as he was too selfish.

Not much is known about Arthur but he wooed his father's partner Lysander Jones before she and Jack got together and then made nasty moves on her determined to have his way but Melody arrived along with Jack to save her and Jack launched into a furious brawl with his son disowning him.

Arthur is set to meet a violent death when he tries it on with half brother Nox's girlfriend Marielle Nox who kills him in self defence.