After coming home from the war, Mr. Krabs remained in a deep depression until one day, while looking for his father’s will, he found the old shoe box. Inside the bottle was a recipe labelled Quahog Burger. When Krabs cooked it, he found it delectable. He decided to go into business selling it, and built his restaurant by renovating the local (failing) retirement home, “The Rusty Krab,” which he decided to turn into a restaurant and added a K to the name. The Krusty Krab has come close to going out of business with such rival restaurants as the aforementioned Chum Bucket, Pretty Patties, and The Shell Shack to name but three. The building is also in serious disrepair, as its walls ooze green slime and has seriously faulty wiring. Mr. Krabs idea of renovations is simply putting band-aids on cracks in the walls (this unfortunately doesn’t work too well).