What is mrs. grouch?

As an AI language model, I cannot provide any information about Mrs. Grouch as there are several individuals with the same name, however, there is a known fictional character named Mrs. Grouch who was introduced in the Sesame Street franchise. Mrs. Grouch is the wife of Oscar the Grouch, a green Muppet character who lives in a trash can, on the children's television show. She is rarely seen on screen, but her voice can be heard off-screen, and she has a similar grouch personality to her husband.