|mermaid man and barnacle boy|
|Lary the Lobster|
Sandy is a close friend of SpongeBob SquarePants. She is a proud Texan and speaks in a stereotypical Southern drawl. In order to live underwater, Sandy resides in a bubble-like dome and wears an atmospheric diving suit when outside her house. Inside the treedome, her normal attire consists of a green and purple bikini. Conversely, as revealed in Tea at the Treedome, other characters must wear "water helmets" with opposite functionality when visiting her house. Sandy possesses extraordinary scientific skills such as the ability to construct complex inventions. Sandy is shown to possess a number of tough, tomboyish character traits and interests; she is skilled at karate, engages in bodybuilding, and is a rodeo champion. She is also a close friend of Patrick Star, SpongeBob's best friend and neighbor, though she sometimes gets annoyed by him.
The series revolves around Spongebob and his aquatic friends. SpongeBob SquarePants is an energetic and optimistic yellow sea sponge who lives in a submerged pineapple. SpongeBob has a childlike enthusiasm for life, which carries over to his job as a fry cook at a fast food restaurant called the Krusty Krab. One of his life's greatest goals is to obtain a boat-driving license from Mrs. Puff's Boating School, but he never succeeds. His favorite pastimes include "jellyfishing", which involves catching jellyfish with a net in a manner similar to butterfly catching, and blowing soap bubbles into elaborate shapes. He has a pet sea snail with a pink shell and a blue body named Gary, who meows like a cat.