Superintendent Watson describes the Fogg family as one of the most aristocratic families in the land, however, as a baron, Lord Fogg is among the lowest of the aristocracy.
There is a sign for "Lady Easterlands Jeweled Easter Eggs" - on it there is a missing apostrophe on Easterland's, and Jeweled would be spelled the British way: Jewelled.
As the sister and daughter of a hereditary baron, respectively, both Penalope and Prudence would be entitled to the courtesy style "The Honourable", but neither would be entitled to be addressed as "Lady".
After being gassed, a totally paralyzed Batgirl led off to Lord Ffogg's dungeon by two of Lady Peasoup's girls. The paralyzing gas used on Batgirl, one would think, would almost certainly paralyze the voluntary muscles! How is it possible for Batgirl to walk to the dungeon to be chained up while being led by two vile criminals if she is paralyzed? It would seem Batgirl would have to be carried there.
It is unclear how most people wouldn't recognize Barbara's secret identity since she kept her costume inside her suitcase with the Batgirl emblem stenciled on it,
At the start, when Dick Grayson is playing the drums wearing a Beatles wig, Alfred for some reason addresses him as 'Master Robin' instead of 'Master Dick'.