SpongeBob SquarePants is a fictional character and the protagonist of Nickelodeon's eponymous American animated television series. Voiced by Tom Kenny, he is characterized by his optimism and childlike attitude. SpongeBob is a denizen of Bikini Bottom, where he regularly gets into absurd and humorous scenarios.
SpongeBob was created and designed by Stephen Hillenburg, an artist and marine science educator. From Wikipedia
