Revealing mistake: When Ricky throws the warden into the meat grinder, in the shot where the warden is being thrown across the kitchen, a wire can be seen attached to him, hoisting him across the room. (01:28:37)
Continuity mistake: When Ricky is sitting on the ground after being thrown to the ground by the warden, whilst the warden is telling him they've got the same kung fu style, Ricky has both his arms placed firmly on the ground. The camera changes angles and suddenly, his left arm is raised off the ground. (01:28:05)
Revealing mistake: Just after the warden throws Ricky to the ground, when he finishes saying "Your strength doesn't even come close to mine", he starts doing an evil laugh and here, we can see the actor's real tongue and teeth behind the fake prosthetic suit that he is wearing. (01:28:02)
Continuity mistake: Just after the warden has one of the guard take his son away, he and Ricky prepare to fight. At this point, Ricky has no blood shown around his mouth. But later in the scene, when the warden becomes muscular, there is suddenly some blood around his mouth that wasn't there earlier. (01:26:20 - 01:27:14)
Continuity mistake: When the warden is kicked across the kitchen by Ricky, in the shot where he lands on a sink, there are two circular smudge marks on the wall beside him. It then cuts to a closer shot of the warden and the two smudge marks have gone. (01:26:31)
Continuity mistake: When the warden is preparing to fight Ricky, he takes his belt off and drops it on the tray of meat on the table in front of him. The warden then pushes the table towards Ricky and the belt is now positioned to be beside the meat tray. Ricky then kicks the warden across the room and the belt is now suddenly nearer to the other end of the table. (01:26:28)
Continuity mistake: Just after the warden has chopped off the inmate's hand by forcing it into the meat grinder, the inmate falls over and some of the blood coming out of his arm splatters on the wall beside him. Two other inmates walk up to him to help him up, and now there is suddenly much more blood on the wall. The blood also changes appearance, being splattered on the wall in one shot, then being smeared on the wall in the next shot. (01:22:16)
Continuity mistake: When the warden begins forcing the inmate's hand into the meat grinder, in the first shot, we can see that his body is placed over a cloth, placed over the side. When the shot cuts, the cloth has suddenly moved much further to the right and away from the man. (01:22:03)
Revealing mistake: When White God fires a needle through the wall of the kitchen, Ricky grabs onto it and is dragged towards the kitchen wall. Just before he crashes into the kitchen wall, a large outline can be seen in the wall, revealing where the effects team made a hole in the wall and plastered over it before filming. (01:23:38)
Other mistake: Just after the assistant warden has been carried away by the other inmate, it cuts to the warden in the kitchen with his son and a guard. When the guard tells him the menu for tomorrow is ready, the subtitles "Sir, the prisoner's menu for tomorrow is ready." The apostrophe in "prisoner's" is shown in the wrong place. Saying "prisoner's" implies that it's just for one prisoner, and since the menu is made for all of the prisoners, the subtitles should have read "the prisoners' menu" and not "the prisoner's menu." The guard even says "They'll have some beans, vegetables and meat for lunch" afterwards, so multiple people were being referred to. (This depends on which format and which studio distribution you are watching, but it can definitely be seen on the Region B Blu-Ray distributed by MediumRare). (01:21:15)
Continuity mistake: When the inmates are cornering the assistant warden, he begins to walk down the stairs in a wide shot, with his left arm lowered. In the next shot, he is suddenly waving his left arm in the air. (01:20:10)
Revealing mistake: When one of the inmates goes to cut off the assistant warden's right arm with an axe, the moment before his arm gets chopped off, we can see that it has been replaced with a fake dummy arm. (01:20:24)
Revealing mistake: Just after Ricky has killed the bald inmate, he then goes to punch the assistant warden in his face, resulting in his one real eye falling out. In the close-up shot of the assistant warden getting punched, a fake prop dummy can be seen instead of the real assistant warden, most likely used so that it would be easier to create the practical effect of his eye falling out. (01:19:22)
Continuity mistake: When the assistant warden starts searching Ricky's cell, he opens the two doors to the toilet stall to see if he is in there. Whilst Ricky jumps down from the ceiling, the assistant warden has the left door on the toilet stall held open and the right door on the toilet stall closed. When he notices Ricky in the next shot, the left door on the toilet stall is now closed and the right door on the toilet stall is now wide open. (01:19:09)
Continuity mistake: Wong Chun stuffs a load of razors in Ricky's mouth and begins hitting him. After the warden asks Ricky a question and Wong Chun stops hitting him for a moment, we can see that Ricky's left cheek looks fine (aside from the blood running down his head). In the next shot, the razors are suddenly sticking out of his cheeks that were not there in the previous shot. (01:16:27)
Continuity mistake: When Ricky punches the drug lord in the side of the head, whilst the drug lord begins to fall over after Ricky punches him, there are no visible injuries shown on his head. When the drug lord is shown on the ground in the next shot, there is a huge wound and lots of blood on the side of his head that would have been visible in the previous shot. (01:12:25)
Revealing mistake: When Ricky punches Tarzan's jaw, in the shot where Ricky's fist goes through the bottom of Tarzan's jaw and up through his mouth, Tarzan has been replaced with a dummy. (01:02:20)
Continuity mistake: When Ricky retaliates after Tarzan tries to squeeze his head through the jail cell bars, there is some blood shown on his face. A couple seconds later, just after he punches Tarzan's arm, there is drastically much more blood on his face. (01:02:10)
Visible crew/equipment: When the warden's son starts hugging his father's leg after tripping up on the red carpet, the camera pans upwards towards the warden, and he begins to turn his head. When he does this, white reflector screens can be seen reflected in his glasses. (00:57:15)
Continuity mistake: When the warden's car pulls over at the prison, the car stops where the back right hand side tyre is positioned a foot or two away from the red carpet. In a close-up shot of the warden getting out, the car is suddenly much closer to the red carpet. (00:56:17)