Mercedes appears to be a supervisor or a head waitress of some sorts, even having her headshot on Raisins' advertisements. This is further evidenced by her training of new employees, like Ferrari. She seems to be kind, professional, and experienced.

Mercedes has long blonde hair combed and wears the standard Raisins uniform, as well as exaggerated makeup that includes blue eyeshadow. Outside of work she was seen wearing a white heart shirt and a pink skirt.