When Squidward is dancing at the Krusty Krab, during the Krusty Krab Talent Show, Harrison is one of many others who starts to throw tomatoes at Squidward. Harrison is even willing to pay one dollar for each tomato thrown.
When Squidward is working for Le Chum Bucket, Squidward's grandmother shows up and tells Squidward that he is not preparing the Fricassee right. She explains that if it is not properly cooked, it can cause stomach problems. Harrison is one of the several customers that gets angry at Squidward.