Goof: Kilobyte destroys the head of Dirty Rat's gargoyle, but in the following nights battle, the head is back on the body, despite the fact it was knocked to pieces.
Trivia: Ace does not seem to know that he is a character from a video game in this episode, but according to all the show's background material the characters have thought that the real world was just another level in the game all along.
At the end of the episode Lady Illusion transforms back to her true form even though there are people in the room.
Trivia: Ace had promised Mark that he and Sparx would stay at Thunder Tower while Mark's class was at the carnival. Considering that the class was heading straight into Bad Guy Central, it seems implausible that an upstanding hero like Ace would agree to endanger all the kids by staying away.
Mark's dream repeats itself in real life, hinting that he may have some type of premonition type ability.
The close friendship between Dirty Rat and Duff Kent is first focused upon in this episode.
The kids all wear Halloween costumes during the episode. Mark is dressed as a English knight, Samantha as an angel, Chuck as Ace Lightning, Brett as an American football quarterback, and Wayne as Pigface.
Staff Head's distrust for Lady Illusion is hinted at when he says "I knew that distressed damsel was not to be trusted!", hinting that his dislike has been around for some time.
This episode is the begining of the romantic relationship between the title character 'Ace Lightning' and 'Lady Illusion'.
Ace's Breakages: The backdoor of Mark's house and the blender.
This is the first time Dirty Rat dresses in an animal costume, the start of a recurring gag in the show.
Ace's Breakages: None, although Mark rips the head off a stuffed animal.
Ace's Breakages: Cars battery, Mark's bedroom window
There were characters that never made it into the series, including a living Cupie Doll; evil balloon creatures; Buzzbeast who was a mutant dinosaur creature with saws embedded in his body; Scrambler (who could have been an early design for Kilobyte); a quintet of unnamed grunts who disguise themselves as carnival toys; and Mortar, described as a rock-like construction worker.
A character who was going to appear in the cancelled Season 3 was Candy Floss, a woman who dressed like a motorcyclist and was described as attacking with an archery set, using explosive lollypops as arrows and could shoot out webs of candy floss.
Trivia: The haunted house in Duff's carnival and the one in the actual Ace Lightning computer game look exactly alike. Quite a coincidence.