Goof: When the group first sees the raiders riding their bats above them, the manes of Ariel and Ookla's horses are the same color as their skin. Ariel's horse should have a black mane and Ookla's should be a light shade of yellow.
Goof: Thundarr's boots briefly change to a gold color when he hacks at a raider making a diving attack toward him with his sunsword.
Goof: As Thundarr and Ookla battle Morag and the raiders, a few of the background scenes in the abyss show the ruins of New York City, seen in Secret of the Black Pearl.
Goof: During Thundarr's battle with Morag, Ariel is seen leading the vapor victims to safety. Notice though that in those two shots, the exact same people are running by her to the ritual chamber.
(Thundarr makes a daring rescue of a human victim in the air)
Raider: Let go! I'll not surrender my catch.
Thundarr: Humans are not for hunting! (Cuts the net with his sunsword and drops with the victim to safety)
Garth: What manner of man are you?
Thundarr: (Holding his sunsword upward) Free!
Old Wizard: I know why you've invaded my sanctum Princess Ariel, and I will not help the humans! (Directs magic blasts at her)
Ariel: (Dodges his attacks) Playing for keeps, huh? (Counters by zapping his creature-shaped throne, which restrains him as he screams) Let me know when you've had enough.
Old Wizard: Enough! I yield!
Ariel: (Snaps her fingers and the throne releases him) Good! Now where's the cure for the humans?
(Afterward, Ariel rides back with the group)
Thundarr: Were you in danger? Did the wizard put up a fight?
Ariel: That nice old man? Don't be silly, Thundarr.
Thundarr: No wizard was ever nice, and no barbarian silly! To the abyss!
This episode is set in the ruins of Seattle, Washington.
Post-apocalyptic Animal Species: Giant bats that can be trained and ridden.
Thundarr's group is helped by an elderly wizard (who wasn't identified) as he reluctantly provided them the cure for the vapor that robbed the human victims of their vitality.