Description character Spongebob is optimistic yellow sponge who lives at the bottom of the Pacific ocean in a town called Bikini bottom.— this optimistic yellow sponge who lives at the bottom of the Pacific ocean in a town called Bikini bottom.memorable appearance: huge blue eyes, long nose, two forward protruding tooth, smile from ear to ear and a lot of holes, like a kitchen sponge. Bob dressed quite extravagant. He wears his famous square pants, white socks to the knee in the blue-red stripes, a white shirt with short sleeves and a red tie.