Common Knowledge: Ironically, while King Gator's out of place music number sticks in people's mind, they generally forget that King Gator does, in fact, return to defeat Carface andattempt to save Charlie (who dies from losing his life watch, nevertheless).
Belladonna's part of I Always Get Emotional At Christmas Time. It really has nothing to do with the plot and kind of comes out of nowhere, as the musical number is Killer's until she shows up and her part is mainly just to make it longer. Not that it's a bad thing, it works very well as a Villain Song.
Contested Sequel: While most fans of the first movie consider the second to be totally inferior because they say that it mostly lacks everything from the original, some say that it's a superior followup to the original because it's not as depressing and it has a good story and catchy songs.
Evil Is Cool: Some people say that Red the demon cat from the second movie is even better than Carface.
First Installment Wins: The first movie tends to be the most popular out of everything in the franchise due to its emotional moments and better animation.
Itchy in the first movie. He was quite a snarky jerk who initially didn't care much for Anne-Marie, but he really needs a hug at the end when he tearfully tells Charlie about how he's been beaten up. And to make matters worse, he loses his best friend again when Charlie drowns and goes back to heaven. They end up being reunited in the sequel, but still...
Charlie. He's greedy and corrupt, but at the end of the first movie, he has to say goodbye to Anne-Marie, who he had really come to care for.
Uncanny Valley: To those who don't find her cute, Anne-Marie can look pretty weird as a semi-realistic human clashing with the cartoony art style.
Villain Decay: In the first movie Carface is an intelligent, treacherous psychopath, but in the sequels and TV series he's a cowardly, bumbling idiot.
Wasted Song: The credits song is nowhere to be heard on the soundtrack. And it's an orchestrated jazz version of "You Can't Keep a Good Dog Down". It's quite catchy too. In fact, all of the instrumental score is arguably better than the songs, but are nowhere to be found.
The song that replaced it, "Love Survives", was a tribute to Barsi.
Anne-Marie, who has no parents and later walks in on Charlie telling Itchy that he doesn't love her. The Reality Subtext on the main page doesn't make it any better.
Itchy, after his run-in with Carface near the end of the movie.