3.The original name for SpongeBob was Spongeboy Ahoy!, but that name Spongeboy was copyrighted by a mop company.
4.Tom Kenny inhaled some air from a helium tank to do the voice of the anchovies in the pilot episode.
5.Stephen Hillenburg came up with idea for the "Sailor Mouth" episode, "Everyone said, 'No.' I couldn’t even use a bleep. So I used a dolphin sound instead."
6.He also wanted to stay away from celebrity cameos on the show. In the hopes of avoiding comparison to The Simpsons.
7.SpongeBob was made into a deity alongside Buddha and Jesus in the "She Used to Be My Girl" episode of The Simpsons.
8.In 2011, a newly discovered species of mushroom was named after SpongeBob. Researchers at San Francisco State University named the fungus Spongiforma squarepantsii.
9.SpongeBob's personality is based off of Jerry Lewis and Pee-wee Herman.
10.The voice for SpongeBob was based on a voice Tom Kenny did for an extra on Rocko's Modern Life, he referred to it as a "total throwaway voice."
11.The idea for SpongeBob came from a comic Hillenburg made in college called The Intertidal Zone.
12.Stephen Hillenburg pitched the show to Nick with a Hawaiian shirt, music, and an underwater terrarium with models of the characters and it made a really great impression.
13.Spongebob's laugh is based on the sound a dolphin makes.
14.A Burger King commercial released in 2009 stirred up quite the controversy among parents, stating that, "It's utterly reprehensible when that character simultaneously promotes objectified, sexualized images of women."
15.Carolyn Lawrence, the voice of Sandy Cheeks received a lot of letters from prison, she stated that it's her biggest fan base.