Sunny SquarePants

Sunny is SpongeBob's 12 year old younger sister.

Early Life
When Sunny was 9 years old, she was abandoned then she became a homeless sea sponge, then she found clothes then she became 'Lucia Foster'. She uses the name so she knew that her parents are there somewhere then she wanted to prove them that she is brave to go out alone.

Appearance
She wears a red-blue dress with a blue ribbon necklace with long, blue, boots. Then Sunny had long, brown, hair. Like her brother, she also had buck teeth, but even smaller.

Personality
She acts confident and brave, Pearl was jealous by her beauty and skills. Her personality resembles Sandy. She's a natural climber, she's so talented that she goes up to a 50 ft tall mountain. She hates mean people then that means she hated Squidward and Mr. Krabs. But however, she acts mean as well.

Despite this, Sunny is sometimes sweet and cherishful girl, she was always attracted to other boys, which SpongeBob needed to protect her.

Life in the Present
Sunny is now in Bikini Bottom. She saw SpongeBob's home and thought that it was just a giant pineapple. Then she sip the juice with her straw then SpongeBob arrives, he was shocked that there was a person who siped in juice, then he chases her then took off the costume, then Sunny was revealed. She greeted him and said she was from the SquarePants family. SpongeBob told her that he was a SquarePants family member. They were happy to be together. SpongeBob calls Sunny 'little sister', then Sunny called SpongeBob 'big brother''. Now Sunny sleeps in SpongeBob's sofa.''

SpongeBob
Since their siblings, their really close. SpongeBob and Sunny began to call themselves 'little sis' and 'big bro'. Sunny and SpongeBob sometimes had sibling rivalry. They call them names and use their arms and legs as boomerangs.

Pearl Krabs
Pearl was so jealous at Sunny. SpongeBob began to get annoyed at Pearl's negative feeling about Sunny. Sunny also to dislike Pearl too, but in some terms, they seemed to be nice each other. The reason why Pearl was jealous is because that she's the sister of SpongeBob and wanted to be his sister because she wanted to be close to him and she denied the truth.

Sandy
They had a strong relationship, They went mountain climbing and they went a helping hand. Sandy and Sunny treats each other as sisters, that made Pearl more jealous. It states that Sunny goes to Sandy's treedome every weekend.