John Jackson "Jack - Jack '' Parr (voiced by Eli Fucile and Maeve Andrews in the first film, Fucile and Nicholas Bird in the second film) is the Parrs ' infant son, the youngest of the Parr children. Initially believed to be the only family member without any powers, he manifests a multitude of superhuman abilities at the end of the first film, most of which are types of shapeshifting. More powers are seen in the short film Jack - Jack Attack on the Incredibles DVD, making his powers the most versatile of the family, and according to a collectible poster included with some Incredibles toys, still more powers are undisclosed.
what's the baby's name in incredibles
John Jackson "Jack - Jack '' Parr