Revealing mistake: When H.I. Is trying to decide on which baby to take one of them has very curly hair but when the mom sees them all sitting up in their crib none of the babies have that same hair.
Continuity mistake: When Hi fights Gale in the trailer, Hi is on Gale's back and Gale is spinning around. Hi's legs destroy a red lamp. Then the next shot shows the lamp in the floor and it is intact.
Visible crew/equipment: Near the beginning when the babies are trying to escape the bedroom, there are several low angle shots of them crawling. The shadow of the camera is visible on the floor.
Continuity mistake: When H.I. is robbing the convenient store to get cash and Huggies, it's been raining as the streets are wet, but the parking lot of the convenient store is bone dry.