Tropes specific to the books.
- The Scrappy: Howie. It really doesn't help that he calls Harold "Uncle Harold", spends most of his time quipping and making puns, and was added to the second book as a puppy.
Tropes specific to the 2016 animated series.
- Alternative Character Interpretation: Is Bunnicula truly as innocent and childlike as he appears? While some of the supernatural goings on are caused by accident and Bunnicula is usually the one to set things right in an episode, some episodes heavily imply that Bunnicula enjoys unleashing supernatural mayhem on the household just to mess with everyone, especially Chester.
- Base-Breaking Character: All three main characters have had mixed reception so far:
- Bunnicula himself. Some find his mischievous antics endearing and adorable, others feel that he comes off as a malicious Troll and his actions border on Designated Hero territory. The episode "Garlicked" is one particularly bad example. Also, there's the idea of making him an actual vampire; either you think it adds to the supernatural aspect of the show or that it's disrespectful to the books.
- Harold. Some love his laid-back, Nice Guy, lovable oaf demeanor, while fans of the book hate that he's been reduced to a bumbling side-kick to Chester when in the books, he's more intelligent and the voice of reason.
- Chester. While many love that his snarky attitude and his role as the Only Sane Man, some feel that his Butt-Monkey treatment goes a bit too far at times.
- Broken Base: The show in general for fans of the book. Some fans genuinely love the series and consider it a funny adaptation in its own right, while others hate how little respect it has for the source material, feeling it takes way too many liberties with the characters and story, such as making Bunnicula an actual vampire when in the book, it was left largely to the reader's imagination. The base is a little less broken with people finding out that James Howe, one of the book's authors, is involved with the show, and actually approved the changes.
- Creepy Cute: Bunnicula is basically designed to be this.
- Fridge Brilliance: Most of the characterization changes(i.e. Bunnicula having genuine supernatural powers and Harold being a slow-witted yet well-meaning sidekick) can be chalked up to that the show is from Chester's perspective. Of course he'd make himself out to be a heroic genius beleaguered by everyone else!
- Germans Love David Hasselhoff: The show is really popular in Latin America.
- Idiot Plot: The entire plot of "Garlicked" could've been avoided altogether had Bunnicula informed Chester that he could regenerate his fur after eating Garlic rather than mess with him (to be fair, Chester decided to screw with him first).
- Jerkass Woobie:
- Chester is an interesting case. He's not quite as naturally mean as your typical example but he's known for his scathing sarcasm as well as a tendency to take revenge to the point of becoming a bully. The episode "Chester's Shop of Horrors" especially highlights this where after mercilessly bullying Bunnicula to get back at him, he goes on an emotional rant about just how insecure he really is at the climax of the episode. There's also the fact that he constantly suffers from both physical and emotional abuse and is pretty much a ball of nerves most of the time. In another episode, he tries to put up Bunnicula for adoption to get rid of him but after hearing Mina tell someone a story about him, he's legit moved to tears and feels guilty about attempting to do so.
- The ghost of Rusty Bones from the episode "Scaraoke". True, he put a horrible curse on an innocent teenage girl for butchering his song on a karaoke machine but his life was absolute hell before his eventual death.
- Moe: All 4 main characters qualify: Bunnicula is a Badass Adorable bunny, Chester is an Adorkable Woobie of a cat, Harold is a sweet-natured Big, Friendly Dog and Mina is a kind-hearted Perky Goth who loves animals.
- The Woobie:
- Mina's neurotic friend Marsha, who suffers the most misfortunes out of all the human characters.
- Chester is somewhere on the borderline of this and a Jerkass Woobie because of everything that happens to him.