- Morgan wears a slightly different outfit to go to war.
- Where did four-armed Brador come from?
- The Shamballan underground complex makes a return appearance.
Kaatar Shang's name may have been inspired by Matai Shang, a villainous Thern, in Edgar Rice Burroughs' tales of Barsoom. Brador's four-armed form somewhat resembles the Green Martians from the same series.
Morgan's casting of the hellfire sword into a body of water echoes events at the end of Le Morte d'Arthur, where Sir Bedivere, at Arthur's command, tosses Excalibur into a lake where it's caught by the Lady of the Lake.