Boom Boom

Boom Boom is a species of Koopa and Bowser's henchman which first appears in Super Mario Bros. 3 as a Castle Boss, then he later appeared. In Super Mario 3D Land after a long absence along with a female counterpart, Pom Pom. His latest appearance is in Super Mario 3D World. Multiple Boom Booms also reappear in New Super Mario Bros. U.