When evil dude takes the tin cup of water, he accepts it by placing his fingers over the rim of the cup which is very unusual. In the next scene, a couple seconds later, he is holding the cup by the handle.
During the fight scene about 41 minutes in, Apple bites the on his leg, rendering him in pain. Her teeth would not have penetrated his pants.
The unicorn horn on the front of Apple's back would not penetrate the female warlord's armour, let alone penetrate her front and back armour.
Technically, Apple is not a robot, but an android.
When Apple uses the View Master on her fourth click of the lever the photo wheel does not turn (look at the hole on the top, it does not move where it has before).
When The Kid and Apple plan to go scavenging and The Kid spins the front wheel of his BMX bike, you hear the clicking of derailleur gears which his bike doesn't even have on its rear wheel.