[Smithy]

everyone’s favorite family of superheroes is back in “incredibles 2” – but this time helen (voice of holly hunter) is in the spotlight, leaving bob (nelson) at home with violet (voice of sarah vowell) and dash (voice of huck milner) to navigate the day-to-day heroics of “normal” life. It’s a tough transistion for everyone, made tougher by the fact that the family is still unaware of baby jack-jack’s emerging superpowers. When a new villain hatches a brilliant and dangerous plot, the family and frozone (voice of samuel l. Jackson) must find a way to work together again—which is easier said than done, even when they’re all incredible."

[Marsh.]

I thought they saw his powers at the end of the first one.