How bad is it? It's the most misguided disturbing children's film.
Should you see it? Not if you're a child. Otherwise, yes.
Kids create a living doll out of their imaginary friend and mannequin parts, the blue-mulleted, spandexed, gold gloved, always singing Rem Lezar, who leads them through adventures like falling in a lake and walking through Central Park, before spending the night in a creepy abandoned shack and making peace with the pulsating disembodied floating head of an obese teenager. There's an a cappella group, a rapper (an actual black man!) in knee socks and more awful songs than you can count. There's also a very strong sense that this was made by a pedophile filming his desires.