Mario Bro: 12-inch Bowser Koopa Junior Plush This is a 12-inch plush figure of Bowser Junior from the classic video game series, Super Mario Brothers! Bowser Junior is the heir to his father, King Bowser Koopa. The plush features Bowser Junior's signature bib and shell just like his father. Have your own Bowser Junior as you play your Mario Brothers games! Dimension & Measurement: Approx 12-inches