Main Babies
- Adaptational Nice Guy: Since this is a show meant for little kids, the Looneys are much sweeter and more innocent than their adult counterparts. This is especially true of Sylvester and Taz, who were often villains in the original shorts. The only exceptions are Lola (who has always been a nice character in all her incarnations) and Melissa, who gets a bit of Adaptational Jerkass instead.
- Annoying Laugh: One episode had them doing this at Sylvester's misfortunes.
- Ascended Extra: Petunia and especially Melissa were very minor characters in the prior Looney Tunes cartoons. Here, they are main characters.
- Blonde, Brunette, Redhead: Lola Bunny, Petunia Pig and Melissa Duck in that order.
- Cheerful Child: A group of playful babies.
- Children Are Innocent: They are pretty naive. Even Bugs, of all people!
- The Cutie: Given their innocence and character design, they pretty much embody this trope.
- Jerkass Ball: Whenever a plot would demand it, they would act brattier than normal.
- All of them except Taz has held the ball in "War Of The Weirds", wherein they shun Marvin.
- Tweety in "Daffy Did It" repeatedly blames Daffy for Tweety's wrongdoings.
- Lola in "Pouting Match" starts sulking to get her way.
- Nice Mean And In Between: Of the three girls, Petunia is gentle and sometimes shy (nice), Melissa is often a Bratty Half-Pint (mean), and Lola is usually mature but she can be stubborn and have arguments with others (in-between).
- Ridiculously Cute Critter: An adorable group of baby animals!
- She Cleans Up Nicely: In "Mind You Manners", the babies dress up all fancy after being taught manners.
- Town Girls: Lola, the athletic girl who loves basketball and badminton (butch), Petunia, the quiet and sweet girly girl (femme), and Melissa, who is blunt, outspoken and a bit bossy, but not as sporty as Lola (neither).
- True Companions: They are close like a big family.
- Used to Be a Sweet Kid: They are far more innocent in this show before they grow up. They also lack the destructive tendencies and Comedic Sociopathy of their adult selves.
- Vocal Evolution: Their voices became more pitch-shifted during season 2.
- Voiced by Samuel Vincent
The leader of the kids, and is implied to be the oldest.
- Adaptational Wimp: While he's probably one of the most resourceful babies, he's still nothing compared to adult Bugs. Notably he spends an entire episode worrying because Daffy was making fun of him and he needs Granny to comfort him at the end.
- Alliterative Name: His first and last name starts with B.
- Bunnies for Cuteness: Bugs Bunny's adult self was already pretty cute, but especially in this incarnation!
- Expressive Ears: Bugs's rabbit ears go downwards when he's sad.
- The Leader: Of the babies.
- Nice Guy: Usually very friendly and reasonable.
- Not So Above It All: He isn't above messing around like the others.
- Only Sane Man: Shares this role with Lola.
- The Prankster: In the intermission songs, he's seen pranking other characters like the baby versions of Elmer Fudd and Yosemite Sam.
- Trademark Favorite Food: Carrots, as usual.
- Vitriolic Best Buds: With Daffy, like their older counterparts.
- Verbal Tic: From time to time, he'll end his sentences with "Doc".
- Voiced by Samuel Vincent
Second in the lead after Bugs. He's bratty but means well.
- Alliterative Name: His surname and first name begin with D.
- Attention Whore: Daffy loves to get noticed!
- Blatant Lies: After Melissa confesses her fibs about Taz, he tries to said that he knew that were lies the whole time. Of course, no one feel for that trick.Daffy: I knew those were fibs all along. I was just going along with it the entertainment value.Everyone: (angrily) Huh-Huh!(Daffy turns to Tweet, who shakes his head, almost like saying "Nope, I'm not falling for that.")
- Bratty Half-Pint: You probably expected it from a younger Daffy Duck, didn't you?
- Butt-Monkey: Although most of his actions are self-inflicted.
- Deadpan Snarker: Rather rude, mouthy and sassy by nature.
- Everyone Has Standards: He's a jerk but by no means a bully. Daffy was actually the first of the kids to tell on Elmer for his picking on Bugs.
- Feather Fingers: His wings act like hands.
- Informed Attribute: "To Tell The Tooth" says that he lacks teeth, but Daffy is a Toothy Bird.
- It's All About Me: Prone to selfish actions. Justified, as he is a little kid.
- Jerkass: Self-absorbed, rude, attention-hogging, and bratty.
- Jerkass Has a Point: In the movie, he was right about telling everyone that the Easter Bunny doesn't exist, plus that there's no way to prove its existence.
- Jerk with a Heart of Gold: Daffy is quite the annoying brat but that's not to say that he doesn't have his nicer moments.
- Mouthy Kid: He may be a buffoon but he's also the snarkiest of the kids.
- Quacking Up: Daffy's still the same hilariously obnoxious and egotistical Butt-Monkey always craving attention from others and generally acts selfishly.
- Sensitive Guy and Manly Man: He is the Manly Man to Tweety and Sylvester's Sensitive Guy.
- Small Name, Big Ego: He finds himself to be more awesome than the others.
- Token Evil Teammate: More bratty than evil, but he's still by far the meanest and rudest of the kids.
- Toothy Bird: Even though "To Tell The Tooth" states he has no teeth, Daffy is drawn with teeth frequently.
- Vitriolic Best Buds: With pretty much everyone, but especially Bugs like their older counterparts.
- Vomit Discretion Shot: In one episode, Daffy overdoes it eating apples and at the end, barfs in front Melissa and the other babies. Although in Daffy's defense before he threw up.... she DID ask for it.
- Voiced by Samuel Vincent
The youngest of the children.
- The Cutie: He's a cute birdie.
- Elmuh Fudd Syndwome: He talks like this. The actual Trope Namer, Elmer Fudd, even appears on this show.
- Feather Fingers: He has feathers that look like fingers.
- Hair of Gold, Heart of Gold: He's a yellow canary and genuinely kind and innocent, rather than a cute Bitch in Sheep's Clothing like in classic cartoons.
- Height Angst: Tweety sometimes deals with disadvantages due to how tiny he is.
- Innocent Blue Eyes: Even more in this show, since his innocence is more genuine.
- Masculine Girl, Feminine Boy: He and Sylvester are Feminine Boys to Lola's Masculine Girl. They like tea parties, while Lola prefers basketball.
- Nice Guy: The show's theme song even calls him one!
- Odd Friendship: His closest friend is Sylvester, of all people.
- Sensitive Guy and Manly Man: He and Sylvester are Sensitive Guys to Daffy's Manly Man.
- The Smart Guy: He is the brainstormer of the group.
- Translator Buddy: For Taz.
- Voiced by Britt McKillip
Third in the lead after Daffy, a close friend of Bugs and the tomboy of the group.
- Adorably Precocious Child: She's shown to be a practical and responsible kid. Emphasized in the Italian dub where she's played by Monica Ward, the Italian voice of Blossom and Lisa Simpson.
- Badass Adorable: Downplayed, since this is a show for little kids, though she still is by far the most rough-and-tumble of the children.
- Bunnies for Cuteness: Just like Bugs.
- Distaff Counterpart: She's portrayed as a female Bugs.
- Ears as Hair: Like her adult counterpart, she ties up her ears like a ponytail.
- The Lad-ette: Downplayed due to the child-friendly nature of the show, but Lola watches sports on TV, plays basketball, and is the toughest baby.
- Little Miss Badass: Enjoys rough games and is strong enough to leap on top of the house's highest shelf.
- Masculine Girl, Feminine Boy: Tweety and Sylvester are Feminine Boys to her Masculine Girl. They both are timid and like girlish activities, Lola does not.
- Nice Girl: Most of the time she's friendly and reasonable, just like Bugs.
- Not So Above It All: In "Pouting Match", she does the rather childish method of pouting to get what she wants. In the end, she learns that she can't get everything she wants.
- One of the Boys: Hangs around with the male babies most of the time.
- Only Sane Woman: Level-headed and mature.. Also shares this role with Bugs.
- The Smurfette Principle: Until Melissa and Petunia were introduced.
- Tomboy: Likes basketball and fighting games.
- Tomboy and Girly Girl: The Tomboy to Melissa and Petunia's Girly Girls.
- Tomboy with a Girly Streak: She likes dolls. Petunia cares about keeping herself beautiful too.
- Wise Beyond Their Years: More mature than the other babies and often the voice of reason.
- Voiced by Terry Klassen
A shy and neurotic kitten who's the least similar from the adult version (although versions are a tad cowardly and both have speech impediments).
- Attention Whore: He enjoys getting attention from Granny more than the others. "Sylvester The Pester" completely revolved around this.
- Butt-Monkey: Due to his lack of self-esteem.
- Cats Are Snarkers: Sylvester is prone to sarcastic quips.
- Cats Hate Water: It's a central plot point in "The Puddle Olympics".
- Compressed Vice: One of the episodes showed him unable to accept anything new. That flaw of his never popped up before or after that.
- Cute Kitten: Sylvester likes to play with yarn.
- Deadpan Snarker: As seen in the Cats Are Snarkers section.
- Extreme Doormat: He's sometimes prone to be bossed around by the others.
- Lovable Coward: Much less confident than the others.
- Momma's Boy: Or Grandma's Boy. He is easily the closest to Granny
- Neat Freak: He is into cleanliness.
- Nice Guy: He's caring, friendly, selfless, and sweet.
- Security Blanket: One episode had him having a blanket. It never showed up after that episode, though.
- Sensitive Guy and Manly Man: He and Tweety are Sensitive Guys to Daffy's Manly Man.
- Shrinking Violet: Not confident, humble, and shies away from a lot of things.
- Voiced by Ian James Corlett
Taz is a silly tasmanian devil.
- Baths Are Fun: Learned this moral at the denouement of "All Washed Up".
- Big Eater: Just like his grown-up self.
- Big Fun: On his better days he's fun-loving, though he also cries easily.
- Bratty Half-Pint: In the early episodes, he had a tendency to throw a fit when things went wrong.
- Brought Down to Normal: "Spinout", showed him temporarily unable to spin after eating too much sugar.
- Cloudcuckoolander: Taz has a goofy personality and is seemingly unable to make a coherent speech.
- Companion Cube: His doll Hairy Gary.
- Cute Little Fangs: He brushes them after every meal.
- Extreme Omnivore: Taz has mistaken objects for food.
- Fat Bastard: He's heavyset and tends to be annoying, although he really doesn't know any better.
- Fat Idiot: Taz is kinda dimwitted.
- Gentle Giant: He is the biggest baby who has a huge heart.
- Hates Baths: In "All Washed Up", before learning that baths are fun.
- Jerk with a Heart of Gold: He's sort of bratty, but he's never intentionally malicious, and after taking a level in kindness, Taz became one of the nicest of the babies.
- Keet: Taz is exuberant, excitable, and constantly spinning around.
- Prone to Tears: The most sensitive crybaby of the group.
- Took a Level in Kindness: In the first several episodes, he was obnoxious. Later episodes have him a good-natured Gentle Giant.
- The Unintelligible: Mostly speaks in babbling, though he does speak coherently occasionally.
- Voiced by Janyse Jaud
Introduced in the middle of the first season, she is a female Daffy Duck in some ways. Her best friend is Petunia Pig.
- Adaptational Jerkass: A little more brash in this cartoon than her adult counterpart. Justified, since her only appearance in the original shorts had her as nothing more than a damsel in distress.
- Adaptation Dye-Job: She has red hair rather than blonde like in the old shorts.
- Always Someone Better: As seen in one episode, she is better than Petunia at almost everything.
- Bratty Half-Pint: In her A Day in the Limelight episodes, she's often shown to be a brat who is a bit annoying to the other kids, though she normally learns her lesson at the end.
- Control Freak: Melissa is somewhat bossy.
- Distaff Counterpart: A female Daffy.
- Fiery Redhead: She's redheaded, demanding, and outspoken.
- Jerk with a Heart of Gold: Melissa can be a control freak, though no matter what, she's still a good girl.
- Little Miss Snarker: One of the ways she's like a girl version of Daffy Duck.
- Mouthy Kid: Not to Daffy's extent, though still pretty snarky.
- Remember the New Guy?: Along with Petunia, she was introduced to the show in the middle of season one without anything explaining how she met the other kids or how she got adopted by Granny.
- Significant Green-Eyed Redhead: In this show, where Melissa is one of the main characters, she has green eyes and red hair.
- Those Two Girls: Normally paired up with her best buddy Petunia.
- Tomboy and Girly Girl: She and Petunia are Girly Girls to Lola's Tomboy.
- Tomboyish Ponytail: Maybe "tomboyish" is a bit of a stretch, though she has a ponytail nonetheless.
- Voiced by Chiara Zanni
Added to the show in the middle of season one. Her best friend is Melissa Duck.
- Adaptation Dye-Job: Petunia normally has black hair but here it is brown. Averted in Season 2 when it becomes black again.
- Flat Character: Has the least characterization of the babies.
- Girlish Pigtails: Bonus points for being an actual pig.
- Nice Girl: The nicer of the Melissa/Petunia duo.
- The Reliable One: In one episode, she struggles to find something she is good at, but the others point out she is good at helping her friends when they are in trouble.
- Remember the New Guy?: She was added to the show smack-dab in the middle of the first season with no explanation as to how she got there.
- Tomboy and Girly Girl: She and Melissa are Girly Girls to Lola's Tomboy.
- Visual Pun: A pig with pigtails.
Adults
- Voiced by June Foray
The caretaker of the children.
- Cool Old Lady: A wise and motherly sort.
- Demoted to Extra: Appears less often in season 2.
- Friend to All Children: She deeply cares for the babies and is always sweet to all of them.
- Friend to All Living Things: She takes care of a group of animals. Downplayed since they are treated like normal children.
- New Job as the Plot Demands: Most episodes have her with different jobs.
- Nice Girl: She's a great person!
- Parent ex Machina: Her main role is delivering the Aesop of the episode.
- Team Mom: To the babies.
- Voiced by Brian Drummond
Granny's nephew, he looks after the kids when she's not around.
- Canon Foreigner: Didn't appear in the original shorts.
- The Chew Toy: Apparent in most episodes he shows up in.
- Determinator: Determined not to let Granny down.
Minor Baby Characters
- Voiced by Samuel Vincent
A timid martian who only appears in "War Of The Weirds".
- Adaptational Heroism: His portrayal in the shorts was sociopathic and evil, but this Marvin is a helpful and kind fella.
- Alien Among Us: His presence as an alien isn't brought up in the episode, just that he's "visiting for a while". However, the songs that he appears in explicitly bring up his Mars roots.
- All of the Other Reindeer: The rest of the kids except Taz didn't want to play with him because they thought he was weird.
- Break the Cutie: After being ditched by everyone else when they thought he was "weird".
- Character Tics: He has a tendency to fidget his fingers together when nervous.
- Loners Are Freaks: The other children definitely thought so.
- Misunderstood Loner with a Heart of Gold: He is undeniably bashful, but Marvin means well.
- Mr Fix It: The reason why Marvin took the kids's toys is because he intended to fix them.
- Nice Guy: Marvin acted helpful to the babies, even though they ostracized him.
- No Mouth: Not drawn with a mouth, even when he is Suddenly Voiced by the episode's end.
- One-Shot Character: Never appeared again after "War Of The Weirds", though he makes small song appearances.
- The Quiet One: Too timid to befriend anyone.
- Same Clothes, Different Year: He still wears the jumpsuit, war skirt, tennis shoes, gloves, and helmet of his adult counterpart. The only difference is that his tennis shoes are sized to smaller proportions and his helmet has a beanie propeller on it instead of a brush plume.
- Shrinking Violet: Makes Sylvester look aggressive in comparison.
- Suddenly Speaking: At the end of "War Of The Weirds", he stops mumbling after finally coming out of his shell.
- The Unintelligible: Mainly spoke in mumbling until the end of the episode he was featured in.
Appears in both "New Cat In Town" and "Stop and Smell Up The Flowers". Tends to make odd smells.
- The Baby of the Bunch: All the characters are babies, but in his first appearance, Pepe is a portrayed as a speechless infant who is younger than everyone else.
- Cute Mute: In his debut episode, he's too young to talk and gets all the attention for his cuteness.
- Ridiculously Cute Critter: Even by the standards of this show.
- Smelly Skunk: In "Stop And Smell Up The Flowers", he is shown to involuntarily produce unusual smells.
- The Speechless: In his first appearance, mostly because he was too young to know how to speak.
- Suddenly Speaking: He doesn't say anything in his debut, but his second appearance has him speaking in full sentences.
- Voiced by Brian Drummond
Appears in "A Bully For Bugs" as a kid somewhat older than the babies, and as a baby in the songs.
- Bratty Half-Pint: Makes Daffy look well-behaved.
- The Bully: He steals Bugs's candy when they first meet, then picks on Bugs constantly.
- Butt-Monkey: In the songs, mainly in "Baby Elmer Had A Friend" and "John Jacob Jongle Elmer Fudd".
- Elmuh Fudd Syndwome: Well duh, he's a younger version of the Trope Namer.
- Heel–Face Turn: He befriends the babies and makes amends to Bugs at the end of his only appearance.
- Jerkass: To the point where even Daffy is disgusted with his actions.
- Jerk with a Heart of Gold: Proved himself to be this at the end of the episode he was featured in.
- Voiced by Scott McNeil
The central character of "Cock A Doodle Do It".
- Adaptational Badass: He wins a challenge against the barnyard dog.
- Badass Adorable: A cute rooster who is good at swimming, plus is strong.
- Beware the Nice Ones: He tells off the dog for chasing the roosters around.
- Be Yourself: He learns this moral at the end of "Cock A Doodle Do It".
- Butt-Monkey: In "Cock A Doodle Do It", Foghorn not only gets victimized by the bigger roosters, but gets hurt various times throughout the episode.
- A Day in the Limelight: In "Cock A Doodle Do It".
- Expressive Hair: An expressive wattle, but still the same general idea. His waddle droops when he's upset.
- Feather Fingers: Just like the other bird characters.
- Motor Mouth: The song "Foghorn's Talking In The Barnyard" claims that he talks everybody's ears off.
- Nice Guy: He's affable and amiable. He even protects roosters that were bullying him from a dog.
- Pintsized Powerhouse: He gets highly strong from training.
- Took a Level in Badass: After the babies help him to gain spirit.
- Verbal Tic: Like his grown-up counterpart, he tends to add "I say" in the middle of his sentences.