Revealing mistake: The female head trainer of the Tiger's Den puts a blindfold on and with a kick KOs the trainee that was sparring with the children. In the close-up of the kick you can see it is miles away from connecting. (00:17:05)
Revealing mistake: When the kids are fighting and one of them puts the other in a Boston Crab hold, a third kid, the main character, breaks up the fight by, well, embarrassing to say, poking the assailant in the butthole with two fingers. Jo rolls away and keeps screaming indicating that he got hurt not just in his pride, but you could easily see that no such action was actually perpetrated. (00:19:15)
Revealing mistake: During Black Mask's fight against Salamander, he dodges the enemy's fire and then sweeps him off his feet. But Salamander's fall is blocked in midair by obvious wirework to give Tiger a chance to punch him in midair. (00:32:00)