Gretl: Why am I always last?
Max: Because you are the most important.
Being the youngest of your group typically comes with some perks and challenges. On one side you're probably the cutest, have a pass to act immature, people like taking care of you, and you can embrace your fun side, knowing that the elders are there to handle the serious stuff. And if there's anything you're naïve about, you have plenty of others to give you the realest unfiltered advice without the generational gap and detachment that your parents or the Old Master have.
On the other end, sometimes people don't take you seriously. There you're kinda stuck because no matter how old you get, you'll always be "the baby" in their eyes.
Embrace the fun side too much and expect a lecture about growing up. Even worse, "acting your age" if you're an adult.
According to The Birth Order Book: Why You Are the Way You Are, Dr. Kevin Lenman describes the last-born children as "social and outgoing" but also the "most financially irresponsible of all birth orders". He also commented that they have the potential to be manipulative as well as charming, and, finally, be sometimes prone to Never My Fault and Attention Whore moments.
Contrast Tag Along Kid, who is usually literally a child, rather than this character who is metaphorically a baby. For reference, the baby is usually at the youngest end of their group's Competence Zone. The kid is young enough to be outside of the zone, and under normal circumstances wouldn't be expected to even be on the team. Contrast Team Dad and Team Mom, who are characterized by their maturity within a minor age range.
Tends to overlap with Kid-Appeal Character and The Cutie. Sometimes rendered as a Token Mini-Moe. Compare New Meat and Young Gun in professional settings. Occasionally can be seen as a supertrope to The Runt at the End and Youngest Child Wins as the baby tends to favored by characters, writers, and fans in real life. Everyone's Baby Sister is this trope used as a plot device to motivate other characters to protect them.
- Played with in Delicious in Dungeon. Chilchuck is treated this way by the rest of the party because of how young he appears, much to his annoyance. In reality he's actually older than Laios, though Senshi and Marcille still consider him a baby because of the long lifespans of their respective species.
- Lucky Star:
- Tsukasa Hiiragi is this trope within her family. The most coddled character out of anyone, innocent, not very brave or bright, and rarely taken seriously.
- Yutaka Kobayakawa, living with Konata and Soujiro Izumi. She is short, childlike, and innocent, even for the show's standards in general.
- Todomatsu, AKA Totty, is the youngest of the Osomatsu-san sextuplets. He has quirks such as shiny eyes and a Cat Smile, still needing to be walked to the bathroom at night, being a Bitch in Sheep's Clothing, and being the last for things.
- The Quintessential Quintuplets: Itsuki is the youngest of the Nakano quintuplets. She is also very prone to childish sulking and pouting when displaying her Tsundere behavior.
- Saber Marionette R: Lime is the youngest marionette of the main three, and is treated as such by the others. Junior even says at one point that she's practically a baby.
- Yuri!!! on Ice: Yuri "Yurio" Plisetsky, the youngest of the current Men's Skaters at the age of 15, averts this; he's a Type A Tsundere with a Hair-Trigger Temper and certainly isn't babied by anybody. Plus, while he can be immature, he certainly isn't the most naive character on the show.
- In the comic Rocketship Rodents, one of the titular rodents is the youngest of the group, being 21. He often mentions he's "of age" when dismissed as a kid.
- Tailgate for the Lost Light crew in The Transformers: More Than Meets the Eye. Technically speaking he's older than most of the crew combined, but he spent millions of years trapped in stasis in a cavern on Cybertron, meaning that mentally he's still quite young. At first he tries to avoid this by pretending to be older than he is, but once the truth comes out he starts acting his age, doing things like getting piggyback rides or asking for curly straws.
- Snow White and the Seven Dwarfs: Dopey is this within the dwarf clan, being the youngest and the silliest.
- Marvel Cinematic Universe:
- In Captain America: Civil War, Wanda Maximoff for Team Cap (and the Avengers as a whole) and Spider-Man for Team Iron Man. Wanda is the youngest human Avenger and has the least amount of combat experience, and her teammates often take a protective or quasi-parental attitude toward her while Spider-Man is still a teenager. Averted with Vision, whose behavior is quite mature despite being only a few months old.
- As of Avengers: Infinity War Spider-Man is made an Avenger by Tony Stark. Making him the youngest human on the team at sixteen/seventeen.
- Wonder Woman (2017): Diana is the youngest Amazon and the only one born on Themiscyra, so she is largely treated as a child by the other Amazons even after she becomes an adult. Since she is the only Amazon who never saw the world outside the island, she has a naïveté that they do not share.
- Ensign Pavel Chekov in Star Trek (2009) is only 17, already having his commission by virtue of being a "Russian whiz-kid". Being a live-action Moe certainly helps.
- Lana from DISCO (2017) is youngest of the three and seems to be the one who constantly gets into trouble — usually involving drugs — and has Emily and Crystal bail her out if she ever gets into trouble. Crystal even says that their parents would let her get away with anything because of this.
- In the original Blackadder, Prince Edmund is the younger son of King Richard IV, and is persistently annoyed by the fact that older brother Harry tends to get all the good jobs and titles while he is perpetually stuck with the task of managing the privies.
- In the The Brady Bunch Reunion Show A Very Brady Christmas, Cindy, the youngest of the original bunch and who is now 19, resents the fact that since she's the youngest they rest of her family all treat her like a baby. At Christmas she's still seated at the "kids table" along with the offspring of her siblings while those same siblings (including Bobby who is only a year or so older than her) are all seated at the adults table.
- In the final season of Buffy the Vampire Slayer, Dawn, Buffy's little sister, complains that everyone treats her like a baby to be protected when she's now older than Buffy was when she [Buffy] started her slaying career.
- Dr Spencer Reid from Criminal Minds. He turned 24 early in Season 1, which made him the youngest of the BAU by almost a decade and the rest of his team (read: Morgan) never lets him forget it. On the plus side, it also tends to evoke Big Brother Instinct in some teammates and Like a Son to Me in others, and lets him get away with his more childish quirks like an over-enthusiasm for Halloween and firing off "physics rockets" in the bullpen.
- Empire: Hakeem Lyon is the youngest child and appropriately the most reckless and immature. He wants to prove himself a man to his father, but is quick to run to his older brothers to bail him out. He was also too young to remember his mother before she got locked up for 17 years and has no respect for her.
- Heure is the youngest of Time Jackers, the villainous group from Kamen Rider Zi-O. He is treated as Annoying Younger Sibling at very best and hates it despite being as immature as everyone thinks he is.
- M*A*S*H. Radar is 18, while most of the other camp personnel's ages range from late 20s (Hawkeye, Trapper, and B.J.) to 60s (Potter's presumed age). After characterization marched on, Radar become an increasingly childlike and naive character, as reflected in many facets of his personality, such as sleeping with a teddy bear, reading comic books, sneaking copies of National Geographic (for nude pictures), and being unfamiliar with subjects related to sex. The fact that he's also short (only 5′5″) didn't help him out much, either, and he was consistently teased about his height—or lack thereof.
- The Other Two is about what happens to the older siblings when their little brother becomes a superstar. Chase, the family baby who becomes a youtube sensation, is portrayed as a decent, innocent kid brother even as he is thrust into the world of fame.
- Dr Julian Bashir of Star Trek: Deep Space Nine begins as a fresh-faced officer straight out of the Academy in his mid-20s, and manages to get off on the wrong foot with most of the cast due to his unconscious arrogance before his Character Development sets in.
- Played literally in Star Trek: Voyager when an evil alien momentarily turns Harry Kim into a squalling baby, lampshading how he hates being treated like the baby of the crew.
- At age 22, during season 1 of Supernatural, Sam Winchester is the baby of his crew which initially begins with Sam, his older brother, his father, and an older family friend and eventually expands to include several nigh immortal creatures such angle, demons, and witches. Sam is the youngest human until the next generation of hunters begin to emerge in season 8.
- Liam Dunbar in the fourth season of Teen Wolf. Stiles even calls him a little runt. Eventually, he is joined by Mason, Hayden, and Corey.
- The White Queen: Anne Neville and Richard of Gloucester are the "baby" within their families, plus they are The Cutie at the start of the show. Anne is her father Lord Warwick's favourite child, and Richard is loved by his eldest brother King Edward IV more than their middle brother George of Clarence.
- Fritz from the All American Pups series is at least one of the younger members. He is somewhat klutzy, reluctant to be too far from home, and a self-admitted Lovable Coward. He tends to be seen as the baby of the group by humans, the other pups, and himself.
- In the first Wings of Fire series, Sunny's idealism and simple outlook means that her friends (despite being the same age) often discount her opinions. Sunny is aware of this, and hates it.
"They'll give me that look I always get, the one that says: 'Oh, silly little Sunny and her crazy dreams, isn't she cute and harmless.'"
- In Jeramey Kraatz's The Cloak Society, Misty, at ten, is two years younger than the rest. She insists on being treated like a team member and even objects that she's used primarily to transport them to and from fights.
- Brand, from The Crush, is the youngest member on his squad. The others make a habit of correcting him and constantly treating him as the new guy, while also taking care of him like a younger sibling.
- In The Last of the Really Great Whangdoodles, Lindy is the youngest of the three siblings. She has the most fertile imagination, which is a valuable attribute in the context, and the most trusting nature, which can be good or bad depending.
- In Renegades, Nova is the youngest of the Anarchists, having been brought into their group by her uncle when she was six. This makes her the most suitable spy, as it means the Renegades don't have her name and face in their files.
- Although Alvin and the Chipmunks are triplets, their birth order is Alvin, Simon, and Theodore. Compared to Alvin and Simon, Theodore is notably more bright-eyed and naive, and often looks to his brothers for advice and guidance. At one point during the 1980s series, and carried over into the two Universal movies, both Alvin and Simon had begun to wear regular pajamas while Theodore still wore his onesies to bed.
- The Jackson Five: Michael Jackson, the youngest brother and interestingly enough the lead singer and The Face of the band for both his talent and cuteness as a child. He started a solo career as a teenager.
- *NSYNC: Justin Timberlake was 14 when the group started and had an Odd Friendship with the eldest member, who was 10 years his senior.
- Spice Girls: Emma Bunton AKA Baby Spice for the iconic girl group. She's the youngest of the group (by less than a year) but accentuated by long blond hair in pigtails, baby-doll dresses, innocent smile, and Girly Girl personality in the marketing.
- The Sugarhill Gang: Master Gee invokes the trope by name for himself during his verse in "Rapper's Delight."
Now, I'm not as tall as the rest of the gang
But I rap to the beat just the same
I got a little face and a pair of brown eyes
All I'm here to do ladies is hypnotize
I guess by now you can take a hunch
And find that I am the baby of the bunch
- Nicola Roberts references her time as one of the youngest contestants on Popstars: The Rivals on her solo single "Beat of My Drum":
Once upon a time I pressed rewind
Two left feet, I had no beat
Baby in the corner learning quick
Keep up, keep up, keep up
- In West Side Story, Baby John is the youngest member of the Jets, with an innocent, vulnerable personalty unsuited to the gang and who mainly goes along with the others due to peer pressure. In the film version he even gets beaten up by the Sharks in the opening scene and is later shown crying Tender Tears after the deaths of Riff and Bernardo. Worst of all, the other Jets eventually try to force him to rape Anita.
- In The Sound of Music, as shown in the page quote, five-year-old Gretl is the adorable youngest of the seven von Trapp children.
- In Annie, six-year-old Molly is the youngest, cutest and most vulnerable of Annie's friends at the orphanage. In the opening scene she wakes up crying from a nightmare about her Missing Mom and needs Team Mom Annie to comfort her.
- Transformers: Bumblebee is already the Trope Codifier for Kid-Appeal Character, has a youthful, friendly design with Innocent Blue Eyesnote , is the youngest of Optimus Prime's troop who wants to prove himself to his more seasoned allies, and empathizes with the Puny Earthlings. One story (in the The Transformers: Last Stand of the Wreckers collection) has Roadbuster mention it's hard not to want to pat him on the head just seeing him.
- BIONICLE: Lewa came off as this to the Toa Mata, even though they were all the same age, due to his tendency for reckless adventure. Character Development eventually wizened him up, though.
- From The Grossery Gang, Rotten Egg was the last one to expire, so he was the last one to turn into a Grossery, making him the youngest, where all the others treat him like a little brother, even though they also spend no spare time mocking him like an older sibling would, too.
- Axl from Mega Man X 7 onward is a newer member of the Maverick Hunters and is characterized as a Young Gun who's more impulsive and eager than the veterans X and Zero. Axl acts immature and thinks of everything like a game.
- Mighty No. 2 Cryosphere from Mighty No. 9 is the smallest of the nine Mighty Numbers, and is designed with a baby aesthetic in mind, complete with a childlike personality.
- D. Va from Overwatch is a 19-year-old professional human Gamer Chick riding a Chicken Walker, in a setting where you'd have to be at least in your mid-twenties to be called 'young'. Because of this, she retains quite a lot of childish cockiness that comes from a competitive gamer of that age.
- Mass Effect has interesting subversions.
- Despite clearly being The Leader, Shepard's is likely actually the youngest member of the true companion crew that appear in all three games, except for Joker who is a few months younger, and Ashley and Tali, who are both a few years younger. Because of the strength of his/her personality, s/he comes across as older but is only 29 in the first installment, several years younger than the rest of the crew save Ashley and hundreds of years younger than some of the allies he eventually makes.
- If Shepard does not romance Tali, Tali will be treated like a kid sibling.
- From Mass Effect: Andromeda, Cora Harper will mention she used to be the team baby in her old commando unit, since everyone else was an asari. The next youngest teammate was a mere two-hundred, and relieved that there was finally someone else to be "the kid".
- In South Park: The Stick of Truth as well as Fractured But Whole and Phone Destroyer, The New Kid tends to take this trope from Butters, as they're already established as being a year younger than the other fourth graders and sometimes tend to be treated as a raw rookie in whatever game they're playing. Heck, Butters even briefly takes up being the New Kid's mentor in the first and third games.
- In Team Fortress 2, all of the mercenaries are grown men...and then there's Scout, who is so short and skinny that he is often mistaken for a teenager by fans.
- Bethany Hawke in Dragon Age II is the youngest of the three Hawke siblings, albeit only by a few minutes. Because of her magical abilities, the entire family is extremely protective of her. If she survives the prologue, she becomes a little sister figure to Hawke's entire party.
- Ace Attorney:
- Pearl Fey in the Fey Clan combines this with Token Mini-Moe; her mother and cousin dote over her very much.
- Defied with Franziska Von Karma. She is the youngest of the von Karmas and is the youngest prosecutor in the original trilogy, but she refuses to act like it instead, she's got an abrasive, cold personality. She even refers to Edgeworth as her younger brother despite being seven years his junior.
- In ClockUp's Euphoria, we have Token Mini-Moe Spoiled Brat Rika... who's just one year younger than the other teenagers. She often uses her charming cuteness to get herself out of trouble.
- Morenatsu: If you don't count Soutarou, Shun is this in the main group. Shun is also the most cheerful, sensitive, energetic, and child-like of the group.
- Eroge! Sex and Games Make Sexy Games: This trope gets Zigzagged; Nene is this in appearance and behavior only (in fact, she's the eldest at 32!); Momoka, a Does Not Like Men Tsundere, is actually the youngest one in the group (at the age of 20).
- Konomi Yanase in Princess Evangile is the youngest of the main cast, and the youngest potential love interest for Masaya. As such, she has to be constantly lectured on how love and relationships really work whenever they bring it up in front of her.
- In RWBY, Ruby is the leader of the eponymous team and is only fifteen years old, while all of her teammates are seventeen years old. Yang dotes on her younger sister and is supportive of her, while Weiss initially despises Ruby and refuses to follow a younger and (at least in her view) even more inexperienced combatant.
- Zala'ess Vel'Sharen of Drowtales is the youngest of her five sisters, and a major motivation for her is to make herself the most powerful to make up for all the times they talked down to her and took her less than seriously due to her age. As a result she has the largest family and the most political connections of any of them.
- Errant Story: Poor Misa is this for the entire elven species. Since they're immortal but slowly became sterile over the millennia, she's literally the youngest elf in existence, and there's no chance of another being born. This means that she's still treated as a baby despite being almost fifteen hundred years old.
- Pocket Princesses depicts Snow White in this manner. She's canonically the youngest Disney Princess at only 14-years-old, and the most innocent and pure-hearted, which combined with Character Exaggeration makes her into a happy-go-lucky Kindhearted Simpleton.
- Stand Still, Stay Silent: Reynir is this to his family, thanks to both being the youngest and the only one to not be The Immune among his siblings. It's to the point that at age twenty, his parents were still exaggerating how dangerous the world is outside the farm, while his older siblings are implied to all have military jobs. He's also this in the Death World exploration crew to which he's a Little Stowaway to an extent, being an untrained civilian making up for the fact that strictly speaking, he's the third youngest out of six behind a couple of military-trained nineteen year olds.
- Ed, Edd n Eddy
- Jimmy, in spades. Kevin in particular will occasionally taunt Jimmy over his younger age, from him frequently carrying around stuffed animals and playing with dolls, to how accident prone he tends to be. In spite of all of this, Jimmy still hangs with the other cul-de-sac kids.
- Averted with Sarah. She's Jimmy's age, and is Ed's baby sister, but she's incredibly aggressive, temperamental, and physically destructive to the point that most of the other characters (Ed, especially) don't even dare mess with her, lest they suffer her wrath.
- Though Eddy usually averts this, "A Pinch to Grow an Ed" is made of this trope.
- The Legend of Korra:
- In Aang's family, Tenzin is "the baby" among his siblings, however he's also the most driven and stoic of the family, probably because he has a chip on his shoulder. He gets teased by his older brother and sister for being daddy's favorite, even as an old man.
- Similarly, Meelo feels he has something to prove, not only as the youngestnote , but also as the only male of his Tag Along Kid trio with his two older sisters. His attempts to be seen as a man are usually played for comic relief.
- Among Team Avatar, Bolin fills this role. Mako occasionally calls attention to his age, and he embraces being the most childlike of the team.
- The Powerpuff Girls has Bubbles. She's the cutest and friendliest of the sisters. She also has the most childlike character tics like sleeping with the lights on and carrying around a stuffed animal. Being explicitly treated as the Baby is a Berserk Button for her. As long as you don't call attention to it, she plays the role to a T.
- Michelangelo of Teenage Mutant Ninja Turtles. In all except the 1987 series, he's treated as the youngest turtle. Appropriately he's the least mature, easily distracted, and most energetic, but he sometimes gets miffed that no one takes him seriously.
- Young Justice. Robin is the baby of the founding core team during season one. This actually becomes a plot point. He's been a super hero since he was 9, has the most years of experience, and probably the most grueling mentor in Batman, so he was considered to be The Leader of the team. Due to his relative youth at age 13 and overall immaturity, the mantle passed to Aqualad (age 16 at the time). Appropriately, this is one of the most impish and childlike interpretations of Dick Grayson since before Batman: The Animated Series in the 1990s. After the time skip he became The Leader proper as Nightwing.
- While Ice Bear is actually the little bro of the trio from We Bare Bears, ironically, it's the middle child Panda that's treated like the baby by his brothers and tend to coddle/overprotect him as such.
- The titular character in Steven Universe, pictured above, being the youngest of the Crystal Gems, is basically this. He's starting to grow up in later episodes, though.
- In the Whole Episode Flashback episodes set before Steven was born, Amethyst seems to have been this, acting even more childlike than she does in the present. The loss of Rose, along with Steven becoming the new "baby," seems to have matured her into more of a Cool Big Sis role.
- Minor Character Peedee Fryman also applies this, and ironically being more responsible than his dad or older brother.
- In "Jungle Moon", Stevonnie starts Dreaming of Times Gone By while sleeping in an abandoned Gem base, and learns Pink Diamond was something like this, a Bratty Half-Pint who was much shorter than the other Diamonds and had to demand her own colony from Yellow Diamond.
- 15-month-old Lily from The Loud House, which means that she is literally a baby in the whole family.
- In South Park, Butters stands out as the only kid in his class who plays Children Are Innocent straight.
- Mindy Melendez from Ready Jet Go! is 4 years old, and is the youngest character in the main clique. However, her being 4 means she can't go to space with the older kids just yet.
- In DuckTales (2017), Louie and Webby are the babies of the bunch. Louie is the youngest of the triplets, and Webby is the youngest of the main cast of kids.
- Tails in Sonic Sat AM is doted on and fussed over by the whole team of Freedom Fighters, probably due to his being the youngest of their group.
- Some legislatures take to nickname their youngest member the Baby of the House.
- If you've got at least one sibling and are the youngest, odds are your family will always see you as this to some extent.