Agatha Gillman is the deuteragonist of the film Ruby Gillman, Teenage Kraken. She is the number one real estate agent in Oceanside, Ruby and Sam's mega-selling realtor over-protective incredibly loving supportive super-mum and the lovely wife of Arthur Gillman. as well as being Grandmamah's daughter. When it comes to business, there’s seemingly nothing she can’t do, and she tries to apply that same polish, ambition and control to her role as a mother to her daughter and son.