File:Koopa Cannon.GIF
The Koopa Cannon shooting a spiky ball.
The Koopa Cannon is the machine on Baby Bowser's Koopa Cruiser in Mario & Luigi: Partners in Time. When Princess Peach's Castle is under attack, Kamek uses this to blast away the Shroob UFO. Later, it is used by Baby Bowser to defeat more Shroob UFOs. He also has to use it to blast away some Shroobs. Later, he has to use it to destroy the incoming Shroob missile, however, he overused it, and they were hit.