The babysitter was Kari McKeen (voiced by Bret Parker).
The babysitter Kari McKeen was voiced by Bret 'Brook' Parker .
"Kari McKeen" is a friend of the Parr's. Violet asks her to baby-sit Jack-Jack so that Violet and Dash can stow away on their mom's trip to find Mr. Incredible. She is voiced by Bret (Brook) Parker.
"Jack-Jack Attack" is a special short feature on "The Incredibles" DVD. It shows some of his manifested powers as they are encountered by babysitter Kari McKeen. (off screen in the original 2004 movie)
Kari Michaelsen's birth name is Markusen, Kari.
Kari Hagar's birth name is Kari Karte.
The last name of the incredibles family is 'Parr'
Kari Lizer's birth name is Kari Suzanne Lizer.
Kari Kuoppa's birth name is Kari Juhani Kuoppa.
Kari Liila's birth name is Kari Raimo Liila.
Kari Uusitalo's birth name is Kari Uolevi Uusitalo.
Kari Karmasalo's birth name is Kari Jyrki Karmasalo.