Actor Allusion: Cloris Leachman voices Gnorga, the Queen of the Trolls in this film, and she had previously played a role as Cerena, Queen of the Trolls in the Hanna-Barbera Christmas special The Little Troll Prince.
Creator Backlash: In the July 2001 issue of "Toon Talk", Don Bluth admitted the film was terrible, and regretted how badly the film turned out;
As it is never a good thing that a child is born prematurely, so it is with producing a film. Development of a script is like the development of a child in the womb, it takes time and must be done right. Building the movie, A Troll In Central Park, taught us this lesson, but indeed, the hard way. I tell you all this in the hope that you might benefit from our foolish mistakes. Scrutinizing your own work is so important, but lets face it, we all are afraid of not measuring up, so we stubbornly cling to our own opinions, shutting out all others. Stanley could have been a richer character with more levels to his personality. Maybe he could have had a dark side, a troll side that he struggled with.
Screwed by the Studio: According to the IMDB trivia. Gary Goldman stated that the reason the movie did so poorly at the box office was the fact that it was released without any promotion whatsoever, and what release it did have was limited. To which most people replied "Have you SEEN the thing?!"
Bluth has said that, had they not rushed their production, he would have wanted Stanley to be a much darker character with more abundant flaws.
Buddy Hackett was initially the voice for Stanley, but Bluth ended up replacing him with Dom De Luise because he was easier to work with (for example, Hackett's contracts demanded a limited number of takes per line, while Dom was more than willing to do multiple takes of his lines).