<Li> Tronasaurus - A talking robotic T - Rex and Mr. Pixel's chief subordinate . </Li> <Li> Shifty - A shapeshifter whose powers cannot hide the large mole on his nose (later removed, though with a telltale scar in its place) </Li> <P> In issue #0 of the series, which is set before the movie, the Confederacy invades Doc Sunbright's office to find and steal a highly dangerous alien virus with which to blackmail Washington, D.C. At the same time, the Parr family is rushing to the office as a pregnant Helen is preparing to give birth to Jack - Jack . Faced with the added complications, the Parrs work together to stop the Confederacy while Sunbright helps Helen deliver Jack - Jack . However, during the fight, Helen catches the virus canister, and Sunbright chastises her on being so close to it while pregnant for fear of affecting the baby . </P> <P> In the following storyline, "City of Incredibles", Jack - Jack comes down with a cold as a result of the virus, and the nature of the virus has the effect of spreading Jack - Jack's unpredictable superpowers to others . The Confederacy of Crime kidnap Jack - Jack in order amplifying their powers by exposing themselves to the virus . When the Incredibles interfere, the Confederacy is forced to abort the plan, and only Shifty is affected by the virus, turning him into a colossal man with complete transformational abilities . After getting rid of Mr. Pixel, having grown tired of being under his authority, Shifty turns his attention towards the Incredibles, but an errant sneeze from Shifty infect his enemies and boosts their own powers, allowing them to defeat Shifty in a coordinated assault . </P>

What are the children's powers in the incredibles