She is a recurring character in the series who was most notably seen in the episode "Bossy Boots". She is a whale, which means Mr. Krabs was once married, and her mother was most likely a whale. She is revealed to be sixteen years old in the episode "Whale of a Birthday".
She seems to dislike Mr. Krabs when he is acting cheap towards her, because she always wants things either to fit in, or just to get them or things that is expensive.
In the past, Pearl seemed to like him so much due to The Chaperone, their relationship grew stronger, however in The Slumber Party, she showed a strong dislike for SpongeBob, it is unknown why, but Pearl seemed to be annoyed now by his actions. But in some episodes, they had a like/hate relationship, Some fans think this is love, SpongeBob and Pearl, but that's highly unlikely since Pearl is only 16. But her age is debatable due to multiple mentions of her birthday during the show.
Pearl and Sandy never interacted to each other officially but the only time seen so far was in Bubble Troubles when Pearl helped Sandy by giving air to her air helmet and said mammals need to stick together. And at the start of the episode "Mr. Krabs Takes a Vacation" though it was just a brief cameo, Sandy was seen sitting directly in front of Pearl while Mr. Krabs was getting everyone (except Squidward) excited about the story of the vacation trip.
Fans think they are rival love interests of SpongeBob. In Texas, she was one of the townspeople who wanted Sandy to stay in Bikini Bottom. She and the rest cheering for Sandy that she decides to stay in Bikini Bottom. They are most likely best friends.
Mr. Krabs is Pearl's father. Almost every episode with Pearl, Mr. Krabs is in it too. Pearl loves her father very much but gets angry when he is cheap. Mr. Krabs loves Pearl very much too. It is possible that she is adopted or that Mr Krabs' wife was a whale.
Squidward and Pearl have an awkward relationship. In The Chaperone, Pearl refuses to go out with him to her prom. And in Welcome to the Bikini Bottom Triangle, he called her a 'drama queen', they were sunbathing while SpongeBob's Patty meter was empty. Pearl thinks that Squidward is such a "barnacle".
Pearl and her friends were best friends, in The Chaperone, they didn't laugh at Pearl that SpongeBob is her prom date, then in Tunnel of Glove, they teased and humiliated Pearl that SpongeBob is her boyfriend, then they told the whole TV broadcast that Pearl and SpongeBob are dating. Then at Drive Thru, Pearl had new friends. It is possible she got new friends because her old friends made fun of her.
Pearl is seen wearing a short pink cheerleaders dress, with a P stitched into it. She also sports short white boots, with heels. She has smooth gray skin and is huge. When she cries everyone covers themselves. She has a red heart lipstick on her nose that turns into lips when she kisses, and she has blonde hair pulled into a ponytail with a pink clip. She has blue eyes and three eyelashes on each eye.