De film draait om wat er gebeurt tijdens de periode dat Kari, de oppas, op Jack-Jack past terwijl de andere Incredibles op Syndrome’s eiland zijn. De film wordt verteld als een flashback terwijl Kari wordt ondervraagd door agent Dicker. Terwijl Kari op Jack-Jack past begint deze superkrachten te ontwikkelen. Hij blijkt te kunnen teleporteren, zweven en door muren heen lopen.
Nee, helaas is Jack-Jack Attack nog niet beschikbaar op Netflix in Nederland.
| Writing | Rob Gibbs | Story |
| Writing | Teddy Newton | Story |
| Directing | Brad Bird | Director |
| Writing | Brad Bird | Writer |
| Writing | Bosco Ng | Story |
| Writing | Mark Andrews | Story |
| Crew | Nelson 'Rey' Bohol | Production Artist |
| Directing | Roger Gould | Other |
| Production | Doug Nichols | Production Supervisor |
| Production | John Lasseter | Executive Producer |
| Art | Bryn Imagire | Art Direction |
| Editing | Stephen Schaffer | Editor |
| Art | Lou Romano | Art Direction |
| Production | Osnat Shurer | Producer |
| Crew | Paul Cichocki | Post Production Supervisor |
| Sound | Larry Hopkins | Sound Mixer |
| Crew | Tony Kaplan | Thanks |
| Editing | Renee Steen | Assistant Editor |
| Sound | Morten Folmer Nielsen | ADR & Dubbing |
| Crew | Wolfgang Amadeus Mozart | Thanks |
| Crew | Greg Dykstra | Thanks |
| Visual Effects | Tony Fucile | Animation |
| Editing | Chris Vallance | Assistant Editor |
| Visual Effects | Alan Barillaro | Animation |
| Visual Effects | Laura Phillips | CG Painter |
| Directing | Mark Sanford | Layout |
| Visual Effects | Andrew Gordon | Animation |
| Visual Effects | Steven Clay Hunter | Lead Animator |
| Production | Becky Neiman | Production Assistant |
