Miko's family (the Fogerty family)
I haven't even finished the film yet and I already dislike them intensely.
1) Expensive private ballet lessons for their son, when he clearly doesn't have the talent or the desire to pursue it, seem to be more about their ego than his wishes or needs.
2) The mother's worry about her children becoming too fat, when in fact she should be consulting a doctor to be sure that 12-year-old Miko isn't endangering her health with her very slim figure.
And the worst, the most gallingly insensitive:
3) The family was tired of the daily commute from Palo Alto to Walnut Creek, California (a distance of 50 miles, and between 60 and 80 minutes depending on traffic) -- so they forced their entire workforce to endure that commute instead. (Or to relocate their entire families, so that the Fogertys wouldn't have to commute.)