The Waitress is a woman who was employed at Café Salmonella.[1] At some point during that time, she encountered a man with a monobrow. She assaulted him and checked his ankle for a particular tattoo. When she realized that tattoo is not there, she apologized to the man and offered him a meal free of charge. It is likely that she mistook the man for Count Olaf because her knowledge of the tattoo and its particular location suggests she is a member of the Fire-Fighting Side of V.F.D.
She may also be the same waitress in The Penultimate Peril, who had a customer that requested sugar in their coffee before she threw him onto the ground so she could see if he had a tattoo on his ankle.[2] Much like last time, she discovers that the customer had no such tattoo so she then apologized for her actions and offered a free slice of rhubarb pie for all his trouble. Her fate after the incident remains unknown, though even if she was the same waitress from Café Salmonella, her employment at both eateries were most likely terminated nevertheless.