Voiced by: Billy Rosemberg (Seasons 1–3), Tyler Stevenson (Seasons 4–5), Gavin MacIver-Wright (Seasons 6–7)
Ruby's three-year-old little brother, who sometimes thinks of tricks to avoid what Ruby wants him to do.
- Annoying Younger Sibling: Ruby sees him as one, because Max never does what she asks.
- Costume Evolution: Max switches from blue overalls to simple blue pants in the newer seasons.
- Foolish Sibling, Responsible Sibling: The foolish one to Ruby's responsible one.
- Karma Houdini: He always gets away with his schemes, and is sometimes even praised for them. In all fairness, his schemes do often help Ruby in the end.
- Kiddie Kid: All the 3-year-olds in the show act like infants. As a 4-year-old he starts speaking in complete sentences but can't speak in fluent English. He's also the only kid in his class who can't speak fluently.
- One-Word Vocabulary: In each episode, he often repeats a single word over and over. This starts being phased out in later seasons, as he begins to speak proper sentences.
- Rascally Rabbit: An innocent example. He's a scheming tot who loves to mess with Ruby all the time.
- Ridiculously Cute Critter: He's a bunny, after all.
- Silent Snarker: Sometimes expresses annoyance in his facial expressions towards Ruby.
- Smug Smiler: Whenever Max thinks up a plan or thinking of a way to trick Ruby during certain situations.
- The Trickster: He likes to be mischievous and play tricks on his sister Ruby.
Voiced by: Samantha Morton
(Seasons 1–2), Rebecca Peters (Seasons 3–5), Lydia Page (Seasons 6–7)
Max's seven-year-old older sister. She can be bossy.
- Adaptational Nice Girl:
- In the animated series, she's a lot more kind and nice around Max, while in the older books, she gets very irritated and annoyed whenever Max disobeys what she tells him.
- In the first series from Seasons 1-5, Ruby is a jerk sometimes to Max and doesn't care when he gets angry at her. In the second series from seasons 6-7, she abandons her Jerkass ways and becomes a kinder and supportive big sister to Max, especially in the first episode, "Max's Preschool", where she encourages him to be himself.
- Come Out, Come Out, Wherever You Are: She does this to Max in the "Max, Where Are You?" song in Bunny Party. Her tone of voice indicates that it's Serious Business - she's not in the mood for Max's games.
- Control Freak: She tends to be bossy and tries to get Max to do things she wants to even when he clearly doesn't want to, sometimes to the point where she is obsessed with it.
- Deadpan Snarker: In the later episodes, along with the older Max And Ruby books.
- Foolish Sibling, Responsible Sibling: The responsible one to Max's foolish one.
- Girly Girl: She loves playing with dolls, dressing up as a princess, having tea parties, doing makeovers, and tends to be soft-spoken.
- Kid Has a Point: As bossy and overprotective she can be, she does have a point about watching over Max and wanting what is best for him.
- Only Sane Woman: She can be this when she's watching over Max.
- Ooh, Me Accent's Slipping: In the first two seasons, she was voiced by Samantha Morton, who is British. For the most part, Morton was able to pull off a decent-sounding American accent, but would sometimes slip into her normal British accent a little.
- Tomboy and Girly Girl: The Girly Girl to Louise's Tomboy. She's more soft-spoken, enjoys having tea parties with her dolls and dressing up as a princess.
- Vague Age: It's difficult to tell how old she is when she can be seen with other adult bunnies. Word of God says she is seven.
Ruby's best friend who visits her most of the time. She has a younger cousin named Morris.
- Best Friend: Louise is always there to support Ruby and her ideas.
- Girly Girl with a Tomboy Streak: While she is just as girly, she is more outgoing and dressed up as a prince once.
- Those Two Girls: She and Ruby share a lot of screentime whenever an episode focuses on Ruby or the Bunnyscouts.
- Tomboy and Girly Girl: The Tomboy to Ruby's Girly Girl. She is louder and more outgoing than Ruby and didn't seem to mind dressing up as a prince on one occasion.
Voiced by: Kay Hawtrey
Ruby and Max's grandmother.
- Ascended Extra: She only appeared in the book "Bunny Cakes" and "Bunny Money" but is a recurring character in the series. In the later episodes, she ends up as a third main character mainly when the episode involves them traveling.
- Cool Old Lady: Dresses up as a vampire and a pirate on some occasions.
- Non-Standard Character Design: The only character with colored eyes.
- Reasonable Authority Figure: She often plays this role to Ruby to cope with her bossiness.
Max and Ruby's Parents
Voiced by: David Pentwick and Paul Bates (Mr. Bunny), Caroly Larson (Mrs. Bunny)
Voiced by: Robert Hall
A male bunny who lives in the neighborhood. Ruby and Louise have a crush on him.
- Canon Foreigner: He's one of the few characters that was created exclusively for the series.
- Cool Big Bro: He acts like an older brother to Max, since they both like doing the same stuff, much to Ruby's dismay.
- Lovable Jock: He's an athlete and a nice bunny.
- Suddenly Speaking: In the earlier episodes, he only says "Uh-huh" or "Nuh-uh" before speaking in full sentences.
- The Quiet One: In the earlier seasons, Roger doesn't talk that much similar to Max.
- Vocal Dissonance: He used to be voiced by an actual teenager in the earlier seasons but was given a younger sounding voice in the later episodes.
Louise's little cousin.
- Best Friend: Just as Louise is Ruby's best friend, he's Max's best friend.
- Heel–Face Turn: He became Max's friend later on in the show. It's easy to forget that he's Max's rival.
- The Rival: To Max in his first appearance in the show. He later becomes friends with Max, but both have disagreements with each other.
Voiced by: Alexis Walla (Seasons 1-5), Loretta Jafelice (Seasons 6–7)
Ruby's third best friend who sometimes appears along with Louise.
- Genki Girl: At least in the earlier episodes whenever she speaks. This was toned down when the show got uncancelled where she acted more calm.
- The Quiet One: She rarely talks, except when she gets excited around the other Bunny Scouts.
- Recurring Extra: She mainly exists to be window dressing for the Bunny Scouts and events that Ruby plans.
- No Name Given: Everyone just calls him "Baby Huffington" or something similar.