Devolution Gun

The Devolution Gun is a powerful weapon in the Super Mario Bros. film. It was mainly used by President Koopa. The device could be used to mobily access the raw power of devolution into a gun. When it hits a victim, it will turned them into their ancestral species. If it hits a citizen of Dinohatten, it will turn them into Goombas. It can also transform Humans into primates.

It is used in the movie by King Koopa in order to stop Mario and Luigi from trying to save Daisy. It is finally used by the Mario Bros. to devolve the Koopa King into a dinosaur-esque creature. They go even further to where he devolves into goop.

Trivia

 * The Devolution Gun seen in the movie was a Super Scope, except that it was repainted with metallic paint.