This page is about a boss from Mario: Rise Of Shadow. For other uses, see Jack (disambiguation).
Jack is a boss in the game Mario: Rise Of Shadow. After Mario defeats Commander Odie he breaks into the Robot Troopa headquarters and just as he is about to shut down all of there systems Jack the Koopa Cyborg jumps out of no where and attacks. After a long battle Mario flips the switch that turns all the Robot Koopas of. When Mario shuts these koopas down Jack is unable to keep fighting because his nervous system is part Robot Koopa so he well get destroyed by Mario.