She is a sperm whale, which means her mother was most likely a whale as well. She is revealed to be 16 years old in the episode "Whale of a Birthday."
She is shown to be an extremely spoiled, entitled, selfish, and insolent teenage girl, often demanding things from her father and throwing tantrums whenever they are not met.
Pearl was born to Mr. and Mrs. Krabs in Bikini Bottom, Pacific Ocean. It is unknown what happened to her mother, but at some point, she either divorced Mr. Krabs or passed away. Pearl is an only child and lives solely with her father in an anchor house on 3451 Anchor Way, Bikini Bottom, Pacific Ocean.
During her toddler years, Pearl learned how to ride a bicycle under the guidance of her father.
Pearl wears a short pink cheerleader dress, with the letter P stitched into it, which stands for Pearl. She also sports short, white, heeled boots. Pearl has smooth gray skin and is huge. When she cries, she floods the area. Pearl has a red heart lipstick on her nose, which turns into lips when she kisses, and she has blonde hair pulled into a ponytail with a pink clip. She has blue eyes and six eyelashes on each eye.
Pearl is depicted as a stereotype of teenage girls: She has age-appropriate interests such as hanging out with her female friends, gossiping, showing her affection towards "attractive" boys, talking on the phone, shopping, makeup, clothes, and in general, anything trendy (or as she likes to call it, "coral"), especially in the industry of fashion and music. She is a huge fan of the boy band Boys Who Cry, and shows her dedication to them by hanging posters of the band in her bedroom. She also seems to have a crush on a model named Derek, who she discovered on the back of the Coral Cuties magazine. Despite her girly girl personality, she also has a tomboy side to her, as she likes things such as Mermaid Man & Barnacle Boy and Mecha Baleen.
Pearl is a spoiled, insolent, rebellious, and misbehaved teenage girl. She frequently whines and complains about her father not fulfilling her desires. She disrespects Mr. Krabs' authority on a recurring basis and will stop at nothing to ignore him in favor of hanging out with her girlfriends. Sometimes, she can even be rude to people when they've done nothing wrong, as seen when she lashes out at Mr. Krabs in "Selling Out" for simply wanting to spend time with her, and yelling at SpongeBob in "Safe Deposit Krabs" for alerting her of Mr. Krabs' absence. Of note, in "The Slumber Party" she locks Mr. Krabs out of his own house for the entire night so as to prevent him from sabotaging her slumber party. Pearl also still needs a babysitter well into her teenage years, as she is prone to escaping the house at night to attend malicious events while Mr. Krabs is gone. Pearl has skewed priorities; she'll put her friends, desires, and hobbies over her family, education, and health, with the episode "Welcome to the Bikini Bottom Triangle" being a good example, where she demands to go to the mall in spite of her and the others being stranded with no way to get home.
Pearl can also be overdramatic and make a big deal out of minor situations. She is shown to cry immense quantities of tears that can create a flooding. It can be quite difficult for her to take "no" for an answer, leading her to whine until she gets what she wants. Pearl is also shown to make disruptively loud noise as a result of her gigantic size, as seen when she cheerleads on stage during the talent show in "Culture Shock." Additionally, she is prone to unnecessary yelling and overemphasizing her sentences.
Pearl is oftentimes depicted as unlucky and mistreated. She has suffered many breakups and friend betrayals, in addition to negligence from her father. Despite being a teenager, she is frequently treated like a little girl, mainly by Mr. Krabs, and therefore goes through a lot of public embarrassment and humiliation. This is most prominent in "Whale of a Birthday," where her birthday party gives out bubble wrap as a party favor. She is also treated as such by Squidward in "Whale Watching," where he tries to get her attention during the teen party with childish things like a yo-yo.
Despite her overall depiction of a stereotypical, rebellious, spoiled teenage girl, Pearl still has some kindness in her. She has warmed up to SpongeBob numerous times in spite of his inconvenience and has been shown to actually care for him, with the episodes "The Chaperone," "Bossy Boots," and "Barnacle Face" being good examples. She also enjoys her job at the elderly-themed store Grandma's Apron and has a decent bond with her manager, Beatrice.
Although Pearl usually doesn't cause issues, some of her decisions lead to large and severe problems. She has shown similar traits to Patrick's antagonism: selfishness, lack of consideration of others, and lack of remorse. Sometimes she can be more selfish than Mr. Krabs.
In "Scaredy Pants," Pearl cries about Mr. Krabs embarrassing her instead of helping him when he chokes on an apple.
In "Selling Out," Pearl yells at Mr. Krabs for wanting to spend time with her.
In "The Slumber Party," Pearl locks Mr. Krabs out of his house to prevent him from ruining her slumber party. She and her friends later attack Girly TeenGirl, who she thought was SpongeBob, causing Girly to run away crying. They also torture SpongeBob when he tries to get in the party, with Pearl going as far as to deem SpongeBob as bad as Mr. Krabs. When SpongeBob ruins the party, Pearl forces Mr. Krabs to spend his money on a new party and never invites SpongeBob or Mr. Krabs.
In "Tentacle-Vision," she takes Mr. Krabs' wallet for money, and disrupts Squidward's show with her destructive cheerleading.
In "Growth Spout," Pearl threatens to eat Mr. Krabs' money when he does not want to feed her.
In "Tunnel of Glove," Pearl attempts to leave the ride, but ends up trapping her and SpongeBob from doing so.
In "Drive Thru," Pearl and her friends yell into Squidward's ear using a megaphone, causing him a major ear injury.
In "Mr. Krabs Takes a Vacation," Pearl mistreats SpongeBob when they're about to leave. At the end of the episode, she takes the two dollars that were rewarded to both SpongeBob and Mr. Krabs to pay for a pair of shoes, which causes Mr. Krabs to cry.
In "Safe Deposit Krabs," Pearl yells at SpongeBob for no reason, when SpongeBob was trying to inform her that her dad was missing.
In "Whale Watching," Pearl escapes the house to attend the wild party with her friends while Squidward babysits her.
Assault: In "The Slumber Party," Pearl and her friends drop a piano on SpongeBob in response to his attempts to join their sleepover, injuring him in the process. In "Drive Thru," Pearl and her friends yell into Squidward's ear using a megaphone, causing him a major ear injury.
Endangerment: In "The Slumber Party," she locks Mr. Krabs out of his own house to prevent him from ruining her slumber party.
Reckless driving: In "Tutor Sauce," Pearl is told by Mr. Krabs' that driving without a license is acceptable, leading her to do so, and with dangerous results. However, it is mostly Mr. Krabs' fault.
Theft: In "Tentacle-Vision," she uses Mr. Krabs' money without his consent. She does this again at the end of "Mr. Krabs Takes a Vacation," where she steals two dollar bills that were rewarded to SpongeBob and Mr. Krabs and uses them to pay for new shoes.
Threat: In "Growth Spout," she threatens to eat Mr. Krabs' money if he does not feed her.
Unlicensed driving: In "Tutor Sauce," Pearl takes Mr. Krabs' advice to drive without a license. However, it is mainly Mr. Krabs' fault for giving her inappropriate advice.
Mr. Krabs is Pearl's father, and as such, Mr. Krabs is in nearly every episode that features her. She is often very disrespectful towards him, using him as a source of money and distancing herself from him whenever possible. Despite realizing this, Mr. Krabs never tells her off, even allowing her to force him to meet her demands. However, Mr. Krabs has actually shown to be a rather negligent and abusive father towards her, which could explain her disdain for him: He once forgot her birthday, allows her to drive recklessly and without a license, caused her to develop acne, and intentionally makes her birthdays terrible. Despite being rich, he's too cheap to spend any of his money on her and satisfies her needs and wants insubstantially.
Despite their troubled relationship and conflicting traits, they love each other very much and share a close bond: On Pearl's part, her love for her father is shown at the end of "Squeaky Boots," where she thanks him for buying him the flipper slippers she wanted. She also makes him breakfast and gives him his medication (which is a giant pill) at the beginning of "Mid-Life Crustacean." Of note, Pearl usually addresses Mr. Krabs as "Daddy" instead of "Dad" like most older kids do, which essentially shows her affection for her father well into her teenage years. On Mr. Krabs' part, he has forced himself to meet Pearl's needs in spite of his cheap nature several times; the ending of "Squeaky Boots" ultimately culminates in Mr. Krabs finally buying the flipper slippers for Pearl after realizing how vexatious the rubber boots were, also going on a vacation with her to get away from SpongeBob. In "Growth Spout," he goes around all of Bikini Bottom to obtain a substantial amount of food while to satisfy Pearl's hunger as she is going through a growth spurt.
Although Pearl has been seen with her father many times throughout the series, she has not yet been seen on-screen with her grandmother, Betsy Krabs.
In the past, Pearl has appeared to like SpongeBob. In "The Chaperone," she takes him to the prom and ends up enjoying her time, despite the trouble SpongeBob causes. In "The Slumber Party," Pearl is annoyed towards SpongeBob, due to his attempts to infiltrate her sleepover. In "Barnacle Face," she thanks SpongeBob for allowing her to go to the school dance when he puts diamonds on her face. In some episodes, they display a love-hate relationship.
Sandy and Pearl have not had much interaction, but they have encountered one another. In "Bubble Troubles," Pearl helps Sandy by giving her air. They seem to share a mutual friendship, as Pearl believes that mammals need to stick together. In "Texas," Pearl is one of the townspeople who want Sandy to stay in Bikini Bottom. She and the rest cheer for Sandy deciding to stay. She also attends Sandy's birthday party in "Feral Friends."
Squidward and Pearl have an awkward relationship. In "The Chaperone," Pearl refuses to go out with him to her prom. In "Welcome to the Bikini Bottom Triangle," Squidward calls her a "drama queen." Pearl thinks that Squidward is such a "barnacle." She likes teasing him, as seen in "Drive Thru." In "Whale Watching," it's revealed that Squidward used to babysit Pearl when she was a kid, and he still does to this day since Pearl has a tendency to leave the house while Mr. Krabs is away.
Friends in Bikini Bottom High
Pearl and her friends hang out a lot. In "The Chaperone," they do not laugh at Pearl that SpongeBob is her prom date, and in "Whale of a Birthday," they agree with her that she has lame parties; then in "Tunnel of Glove," they tease and humiliate her that SpongeBob is her "boyfriend," and then tell the whole TV broadcast that Pearl and SpongeBob are dating. In "Drive Thru," Pearl has new friends.
"Oh, actually it was really funny when that hot dog landed in Judy's hair!" —"The Chaperone"
Pearl has not been seen interacting with any other relatives besides her father.
While her birthday is unknown, a few facts about her birthday are known. 1. The earliest that Pearl could be born is 1995 or January 1996. 2. Pearl was born several years before January 28, 2016.
According to the SpongeBob comics, she likes Mecha Baleen, which is probably a take-off of the DC Comics character Cyborg.
Her outfit seems to resemble that of Amy Rose's in the classic Sonic the Hedgehog games, except the colors are different.
^Assuming that Mr. Krabs did not know Squidward prior to him hiring Squidward to be The Krusty Krab's cashier, in Whale Watching, Squidward is revealed to have babysat Pearl when she was a baby, which means that she could have only been born at most three years (Pearl is still wearing a diaper in the photos) before Squidward joined the Krusty Krew, which was in 1998 or January 1999.