The Bad Piggies are the main antagonists of the Angry Birds video game franchise and the secondary antagonists in The Angry Birds Movie. They constantly to steal eggs from the Angry Birds. To prevent the birds from reclaiming their eggs, they construct buildings and other structures. The Pigs reappear in Angry Birds Rio as balloons. In The Angry Birds Movie, it is revealed that they have a leader named Leonard.
They are all green in color and come in different variants: small, medium, and large and sometimes wear different accessories and hats.