Gertrude, or otherwise known as Pookie by Phil, is Arnold's grandmother from the Nickelodeon Nicktoon Hey Arnold!. She is the wife of Arnold's Grandpa Phil, and they have known each other since childhood. They had a relationship like Arnold and Helga when they were young. Gertie was mean to Phil (although in more extreme ways, like putting thumbtacks in his seat, dunking a part of her hair in ink and telling the teacher Phil did it, etc.) Grandma Gertrude runs a boarding house with Phil. Most of the boarders think she is crazy, because in every episode, she has a different theme that can be seen in her clothes, the way she talks, and the food she prepares for the boarders. She often is used as a philosophical source, especially with Arnold, through the use of metaphors that are usually not