Agatha is the mean nanny who bullies Jessie and Zuri in the episode, World Wide Web of Lies. She ran a blog called, Toddler Tattler, where she posted out of context pictures that made Jessie, and other nannies, look like they were lousy at their jobs. However, Jessie and Christina Ross blackmailed her into taking it down. Agatha is similar looking to Nanny McPhee from the film franchise, Nanny McPhee, but their personalities are completely different. She is portrayed by Jennifer Veal.
- She looks similiar to Nanny McPhee. This might be a reference to the movie.
- Her website, Toddler Tattler, is actually a real website, but not about Jessie and the others nannies.
- Her name might be a reference to Agatha Trunchbull.