Youo can find Mr. and Mrs. Incredible right inside the entrance to Timekeeper. They are no longer at MGM, Chicken Little took over that spot at the end of Animation.
Inside the entrance to Timekeeper in Tomorrowland, usually Mr. and Mrs. Incredible are out greeting. They seem to be there often throughout the day. Stitch and Buzz are usually nearby, too. The rare one is Frozone, as he doesn't seem to get out much anymore. Hope you find them!