Possibly unintentional, but Gary Oldman's character Ruber (an obvious villain) is very similar to Dr. Smith, another obvious villain played by Oldman. It helps that both films came out in the same year.
Cary Elwes' voice work as Garret definitely evokes his performance as Westley in The Princess Bride, right down to a shot between him and Kayley that resembles that film's poster.
All-Star Cast: A big part of the voice cast were pretty big names.
The singers were no slouches either. Andrea Corr for Kayley or CÚline Dion for Lady Juliana are the best examples.
Even the non-English versions got pretty big names and talented voice actors and singers from each respective country. See the Your Mileage May Vary entry for details.
Box Office Bomb: Despite the schedule change to open away from any other animated film, Quest For Camelot still failed due to negative reviews and comparisons to Anastasia, The Little Mermaid (which was reissued in theaters that November), and Mulan, and was devoured by Godzilla (1998), losing Warner Bros. about $40,000,000 (which was exactly the film's budget - it only made $22,510,798 domestically and contributed to Warner Animation shuttering its doors until The LEGO Movie brought it Back from the Dead 16 years later).
Breakaway Pop Hit: Few people realize that "The Prayer" was initially written for an unsuccessful animated film. Likewise, "Looking Through Your Eyes" was a surprisingly big radio hit relative to its origins, although it has mostly faded into obscurity since the film came out.
Creator Backlash: Animator Lauren Faust has spoken at length on how she hated making this film. She admitted that Warner Bros. only wanted profits. Faust also hated how the animators were rushed to finish the film on time. Along with the other animators, she knew that the film was going to bomb and they were right. In the end, she agreed that the original PG-13 version would be better.
Warner Bros. was banking entirely on the success of this film to ensure that they would have a future in animated features. However, the film's failure was the first set of dominoes that resulted in the eventual shutdown of their feature animation division until their return as Warner Animation Group in The New '10s.
Frederik Du Chau, who turned the film into a Disney-clone musical, did not direct another film for 7 years, and one of the writers, Kirk De Micco, had that exact same hiatus; both worked on Racing Stripes, but De Micco went to DreamWorks Animation and did The Croods, while Du Chau is in the C-list of animators.
Both this film and the next one from Warner, The King and I, also liquidated the career of another one of the writers, David Seidler, as he didn't work on another film until 2010.
Dueling Movies: With Disney's Mulan, which also has a heroine trying to get out of a traditionally female role and join the battlefield, fighting against her country's sexist traditions, along with a dragon sidekick. Disney prevailed yet again, and this did not help Warner's business at all.
The film was originally going to be directed by Bill and Susan Kroyer, the husband-and-wife team behind FernGully: The Last Rainforest, and the film was originally meant to be a much darker, more faithful adaptation of Vera Chapman's novel The King's Damosel. However, when Frederik Du Chau replaced the Kroyers as the director, he overhauled the storyline and turned it from a dark and faithful story into an very loose Disney-esque musical just to compete with Disney. It didn't work out so well and was a complete box-office failure. The move banished his career to the B and C lists in the end for it.
Before the executives were through meddling, some main characters were renamed after their children. Kayley was originally Lynette in the book — as in Arthurian legend.
Heck, it wasn't even going to be a musical! All of the songs were written by composer David Foster and lyricist Carole Bayer Sager in the later stages of the film's production.
Fake Brit: Canadian-born Jessalyn Gilsig as Kayley. Her attempt at a British accent slips a couple of times.
This film, one of countless Disney-copycats at the time, is sometimes seen as one of the signs that The Renaissance Age of Animation was coming to an end, and is an especially easy target for the downfall of traditionally animated features in America towards the end of this era.
It was also a sign that the animated musical was about to go into hibernation; this was one of a slew of animated musicals, with DreamWorks doing their own with Prince of Egypt, which was much more well-received. It didn't take long for DWA to crush the genre and replace Warner as Disney's top Arch-Enemy on the back of films like this.
Non-Singing Voice: Most of the cast, possibly because this wasn't initially written as a musical, so whether a given performer could sing would not have been a concern at the time he/she was cast. In addition, some of the original actors can sing, but it's possible that the songs were added in so late that either the contracts were already completed or the actors were no longer available.
The vocal differences between speaking and singing voice actors are especially noticeable. For example, Kayley gains a very clear Irish lilt (provided by Andrea Corr) when she starts singing.
Old Shame: None of the animators who worked on this movie like it. Lauren Faust, whose staunch feminist philosophies are a complete 180 from this film's standards of a strong female character, has been particularly brutal to it in the years since.note She later admitted that she had no idea what the movie was actually about when she was animating for it and was furious once she saw it.
Show Accuracy/Toy Accuracy: Zig-zagged. A lot of the promotional pictures and some of the toys tend to show Kayley with her hair loose, something that only happened for two minutes at the most. It makes it hard to tell if Kayley was meant to stay that way or no.
Troubled Production: As mentioned above, the film went through numerous changes that led to its Disneyfication. Both Lauren Faust and a handful of other animators who worked on it have unkind memories of this film, full of stubborn executives and a script they hated.
What Could Have Been: The film was originally conceived as a darker, edgier and generally more serious PG-13 adventure as it was based on a very dark and serious book, The King's Damsel, before being retooled into a more family-friendly Disney-style production just to compete with Disney.