Commander Bayliss was a traditional public school and Oxford educated man. He was bureaucratic by discipline but humorous by nature. He loved his little jokes and in particular the name he'd chosen for Rufus.
"What a poncey name that is!" declared Rufus, "why didn't you give me a cool name, like Brett Butcher?"
"I think you've done enough butchery! Your new name acknowledges your rebirth, the new you, the Mark 2 you. Allow me my little joke, Mark! Live with it.... or..."
"OK.... I don't give a shit what you call me. I know I'm Rufus Johnson."
"Rufus Johnson's dead!"