What is the name of the square yellow sponge who lives in a pineapple?

The character you are referencing, known for living in a pineapple under the sea, is SpongeBob SquarePants. He is the main character of the animated television series created by Stephen Hillenburg and has become a cultural icon since the show's debut in 1999. SpongeBob is depicted as an optimistic and enthusiastic sea sponge who works at the Krusty Krab, a fast-food restaurant in the underwater city of Bikini Bottom. His distinctive square shape and yellow color contribute to his recognizable appearance, along with his signature laughter and childlike persona, making him immensely popular among audiences of all ages.

In contrast, the other characters mentioned—Patrick Star, Squidward Tentacles, and Mr. Krabs—are also significant in the series. Patrick is SpongeBob's best friend, known for his simplistic and often clueless nature. Squidward is SpongeBob's neighbor, known for his grumpiness and disdain for his job. Mr. Krabs is the owner of the Krusty Krab and is characterized by his obsession with money and profit. While these characters each have their unique attributes and roles in the show, none of them match the description of the square yellow sponge who resides in a pineapple, which clearly identifies SpongeBob as the