Pearl Krabs is a fictional character in the Nickelodeon animated television series SpongeBob SquarePants. She is voiced by actress Lori Alan and first appeared in the season one episode "Squeaky Boots" on September 17, 1999. She was created by the late marine biologist and animator Stephen Hillenburg, who was inspired to design a whale character while supervising whale watches at the Ocean Institute in Dana Point, California.

Eugene Harold Krabs, better known as simply Mr. Krabs, is a fictional character in the American animated television series SpongeBob SquarePants. He is voiced by actor Clancy Brown and first appeared in the series' pilot episode "Help Wanted" on May 1, 1999. The character was created and designed by marine biologist and animator Stephen Hillenburg.