Vivian Tatertot worked in the school cafeteria at Crystal Cove High School.
Physical appearance[]
Vivian is an overweight middle-aged woman with brown hair and pink lipstick. She wore a cafeteria worker's uniform consisting of a blue hat, pink rubber gloves, a white shirt underneath a light purple collared shirt with a name tag on it, a white apron over a pair of blue pants and pink flipflops.
Personality[]
She was rather frightened about the Gobbler, but in reality she was faking it all to hide the fact she was trying to get revenge.
History[]
Solve It with Scooby-Doo!: Math[]

Vivian unmasked.
She wanted revenge on the kids at Crystal Cove High School because they were never happy her food, so she dressed up as the Gobbler to mix up the food portions as something to make everyone unhappy about.
While the gang was at the cafeteria just as lunchtime started. They were also getting mixed results and adding it together, when Shaggy was questioning about it. Vivian showed up frightened and told them about the Gobbler, a dusty white creature that she and the other employees thought might've been responsible for the mixed up food.
She was later caught and unmasked to be the identity behind the Gobbler, and was arrested and most likely fired from her job.