Hilgo is a minor character in The Adventures of Jimmy Neutron: Boy Genius. She is a hefty Russian-American woman who is the lunch lady at Lindbergh Elementary School.
Before she appeared as a lunch lady, Hilgo made her debut in an alternate timeline as the Neutrons' personal maid, acted more intimidating, had a deeper voice, and could only say "Да" ("Da"; Russian for "yes"). She was also part of an angry mob in Nightmare in Retroville.
In Return of the Nanobots, where she was officially introduced in the Lindbergh staff, the Nanobots criticized her soup, and "corrected" it, even putting a shoe in it. Hilgo retorted by mentioning she already served shoe soup twice this week.
Her most significant appearance was in How to Sink a Sub, where she, along with the other members of the Lindbergh staff, Ms. Fowl, Principal Willoughby, and Coach Gruber, were trapped in hyperspace for a week by Jimmy so he and the kids could have the school to themselves. When she and the teachers eventually return, they save the children from their parents, who were acting like rebellious teenagers, with Hilgo in particular putting them to sleep by feeding them high-carb pancake batter. Despite saving Jimmy, the teachers still punish him for sending them into hyperspace, including Hilgo, who denies him soup on Soup Tuesday.