Morton Koopa Jr. (known as Big Mouth Koopa Jr. in the cartoons) is a member of the Koopalings, a seven-member clan loyal to Bowser. The Koopalings were originally portrayed as Bowser's own children. This idea was often omitted in games released after their debut in Super Mario Bros. 3, and Shigeru Miyamoto said in a 2012 interview that the current story is that they are not Bowser's children, making Bowser Jr. his only offspring. Morton stood out due to his primarily darker skin tone and white head until New Super Mario Bros. Wii, where his pale gray shell was also an interesting detail as the Koopalings now have unique shell colors. He also has a star-shaped birthmark on his face, although Larry now has similar marks. Although Morton is the largest of the Koopalings, he is not as powerful in combat as some of his peers.
Super Mario Series Morton Koopa Jr. 19cm Plush Toy