The Reverse Beartrap is a mechanical contraption which is attached to a victim's head, and if the victim fails to unlock and remove it before the timer goes off, it will kill them by ripping their jaws open. Along with the Bathroom Trap, the Reverse Beartrap is the most popular trap in the entire series.
The film begins with a young man named David (Whannell) in an interrogation room talking to an unnamed, unsympathetic police officer. David is in handcuffs, and there is blood on his face and shirt. David is smoking a cigarette. He tells the officer that after he finished his work as an orderly at the hospital, he was knocked unconscious and taken to a large room. Inside the room, David was strapped to a chair with a large, rusty metal device locked onto his head.
To his left was a small television, which began playing a video showing a frightening puppet, named Billy, that tells him that the device on his head is a "reverse beartrap", which is hooked into his jaws and will pry his face open with great force if he does not unlock it in time. The dummy tells David that the only key to unlock the device is in the stomach of his dead cellmate.
David is able to break free of his bonds, but by doing so he sets off a timer on the back of the device. Across the room, he finds the body that the puppet mentioned, but also finds that the man is actually alive but under paralysis. David panics, and slices into the man's stomach anyway. After finding the key, David unlocks the device and throws it to the ground, just as it snaps open. David escapes death from the device.
David begins screaming and weeping in horror. At the entrance to the room, the puppet from the video appears on a tricycle. He congratulates David on surviving, and tells him that he has proven he is no longer ungrateful for being alive.
The movie ends with the police officer asking "Are you grateful, David?" causing the young man to again break down.
Hello, Amanda. You don't know me but I know you. I want to play a game. Here's what happens if you lose. The device you're wearing is hooked into your upper and lower jaws. When the timer at the back goes off, your mouth will be permanently ripped open. Think of it like a reverse bear trap. Here, I'll show you. There is only one key to open the device. It's in the stomach of your dead cellmate. Look around, Amanda; know that I'm not lying. Better hurry up. Live or die, make your choice.
Amanda Young was put in the Reverse Beartrap, unintentionally setting it off by pulling a cable attached to the back wall triggering a timer. She was able to remove the key from the paralyzed Donnie Greco's insides by cutting him open with a scalpel, and unlocked and removed the Beartrap seconds before it went off.
Lynn Denlon found a Reverse Beartrap in Jigsaw's lair on a mannequin head. She investigated the device, accidentally setting it off. Shortly after this, Amanda talks to Lynn about it, and a flashback is shown to Amanda's experience with the trap.
As part of Jigsaw's final request, Jill puts Hoffman in a modified version of the Reverse Beartrap with no apparent means of escape; however he was able to get free from the chair by smashing his hand with the front of the trap, and by placing the Reverse Beartrap between two bars on a window, preventing it from opening up all the way, and was then able to remove it. He did not survive unscrathed, however, as half of his lower jaw was mutilated.
After surviving the Reverse Beartrap, Hoffman takes the RBT 2.0 with him and left. He later places the Reverse Beartrap 2.0 at the sight of Evan's test, and it was found by the detectives and taken back to the coroner's office as evidence.
While investigating the evidence room, Hoffman comes across the original Reverse Beartrap, and the Reverse Bear Trap 2.0. He considers the RBT 2.0 for a moment, but dismisses it for the original Reverse Beartrap. He takes it and places it on Jill's unconscious body. He clamps it onto her jaw and straps her wrists to a chair. She awakes and he starts the timer. He stands by the exit of the room and watches the timer tick down its final seconds while Jill struggles against her bindings. The timer hits zero and the RBT snaps open, tearing Jill's jaws and face open and killing her. Hoffman walks out of the room satisfied, with a mimicked "Game Over".
The Reverse Beartrap on Amanda Young was seen several times in archive footage to Amanda's test.
The main character of the game David Tapp awakens in a bathroom with the reverse bear trap on. Following the on-screen icons on how to unlock it, David Tapp escapes. He doesn't use a key in order to unlock it, and it is explained in Saw II: Flesh & Blood that he can unlock a reverse bear trap without using a key due to studying the device many times.
Some people around Whitehorse asylum can be seen wearing Reverse Bear Traps who attempt to kill Tapp due to a key that is inside him which will free them. Tapp can activate the trap by attacking the person.
- Saw (2003 film) (first appearance)
- Saw II (flashback)
- Saw III
- Saw VI (flashback)
- Saw 3D
- Saw: The Video Game
- It should be noted that even though The Reverse Bear Trap is one of the only Saw traps to be featured in more than one of the series' films, it has only ever claimed one victim, Jill Tuck (Saw 3D), and that was because Hoffman rigged it so that Jill couldn't escape.
- In Saw II, a drawing of the Reverse Beartrap can be seen on a billboard in Jigsaw's hideout. Next to it is a picture of a football helmet. This strongly implies that this is what the trap was based on.
- In The First Saw movie when Amanda is seen wearing it, the trap would not have gone off if she did not get up from her seat, because when the wire was removed, the timer on the trap would be activated.