Katherine "Ma" Beagle' is a recurring villain from DuckTales. She is the mother of the Beagle Boys and the matriarch of the clan.
Ma Beagle is the leader of the criminal organization known as the Beagle Boys who are constantly try to rob the extremely wealthy Scrooge McDuck.
Although she acts like a parent figure to most of her Boys, she is shown to have little to no respect for any of them. This is proven in Treasure of the Found Lamp! when she is able to steal the supposedly magical lamp from Scrooge and her first wish was to have better kids.
Ma is a cruel and cunning criminal mastermind. As she commands her boys to rampage the town or rob Scrooge. She is a master strategist as she made through any problem and does it successfully; far better than any other beagle.