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Eugene Harold Krabs, simply and better known as 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.

Krabs owns and operates the Krusty Krab, a prominent fast food restaurant located in the underwater city of Bikini Bottom. He resides in a hollow anchor with his daughter Pearl, who is a teenage sperm whale. Krabs is obsessed with money and dislikes spending it, but will go to great lengths to make Pearl happy. He tends to worry about his riches and neglect the needs of his employees, SpongeBob and Squidward. He is in a romantic relationship with Mrs. Puff and shares a rivalry with his former best friend Plankton, who owns a struggling restaurant called the Chum Bucket located across the street from the Krusty Krab.

Critical reception for Mr. Krabs was positive upon the series' debut but has been mixed as the show progressed. Critics have offered praise toward his portrayal as a single father to Pearl but criticized a perceived exaggeration of his greed throughout the series' run. The character has been featured in a variety of merchandise, including plush toys, collectible figures, and video games. He also appears in the 2004 feature film The SpongeBob SquarePants Movie and the 2015 film The SpongeBob Movie: Sponge Out of Water.