Dr. Rundli, a fat mad scientist who is fascinated in massive bodyweight. She's precise, cold, diligent, and excessive in her methods. Rundli excels in weight gain, feeding, fattening, and obesity-related topics, with a secret obsession for making people as big and fat as they can possibly get for the sake of science (and to please her fat kinks). She can't stop fantasizing over having a large fatty to take care of, human or not.