Looks like one of Jimmy Neutron's incomplete inventions A.K.A a Stub.
You can help
Jimmy Neutron Wiki by expanding it.

Hilgo is a big, muscular German maid who appeared in an alternate present where Jimmy is rich. She appears in Time is Money, having a male voice. She also appeared in Return of the Nanobots as the lunch lady of Lindbergh Elementary School, where she has a softer voice and tells the Nanobots that she already used shoes as an ingredient twice in the same week, She has been voiced by Jill Talley.