Brainwave Scanner

The Brainwave Scanner is a fictional device found in Marvel's G.I. Joe comic series used by Cobra for interrogation and brainwashing. It was invented by Doctor Venom and later refined by Dr. Mindbender.

In the Scanner's first appearance, Dr. Venom uses it to interrogate the captive Snake Eyes. Despite the pain it causes him, Snake Eyes resists Venom's attempts to extract the location of G.I. Joe headquarters from his mind. Venom does manage to get snippets of Snake Eyes' personal history and a few fleeting glimpses of some Joe personnel. Snake Eyes uses techniques to fake his death and escapes when Venom and a guard unstrap him from the machine. Venom uses technology from the Scanner in the creation of the SNAKE robots. This enables Venom to control anyone who wears the armor. He is able to control Snake Eyes and Kwinn and use them in battle with the Joes. However, Snake Eyes uses his prior experience with the Scanner to break free.

After Venom's death, the Scanner is not seen again until Cobra Commander uses it to probe his son Billy's mind to find out who aided him in a foiled attempt to kill the Commander. Like Snake Eyes, Billy is able to resist the Scanner and Cobra Commander is forced to call off the interrogation when Billy starts remembering watching the Commander start Cobra. When Dr Mindbender joined Cobra, he borrowed the Brainwave Scanner to use in the creation of Serpentor. Mindbender had his own brain scanned so that Serpentor would be familiar with modern tactics and politics. He was not aware of the pain associated with being scanned and passed out. No sooner was he unstrapped then the Joe Ripcord was placed in the Scanner so they could find out if he warned the Joes where Cobra headquarters is. They confirmed Ripcord had alerted the Joes just as the attack on Springfield began.

Mindbender later redesigned the Scanner, debuting the new design in a Terror Drome in Sierra Gordo. Ironically, Snake Eyes is subjected to the Scanner when he infiltrates the Terror Drome disguised as Flint. A team of Joes led by Stalker try to rescue Snake Eyes but fail when Stalker is injured. Scarlett teams with a reformed Storm Shadow to rescue Snake Eyes when he is transferred to the Cobra Consulate Building in New York. While there, Snake Eyes once again uses his ninja techniques on the Scanner, this time overloading it.

In the Cobra town of Broca Beach, Baroness and Zarana use the Brainwave Scanner to brainwash Clutch and Rock & Roll. Cobra Commander uses multiple copies of the Brainwave Scanner to brainwash the residents of the town of Millville. The Baroness herself is subjected to the Scanner when Cobra Commander captures her during an attempt to kill Destro. Firefly uses another Scanner to brainwash both Joe and Cobra ninjas in an attempt to overthrow Cobra Commander.

...
Wikipedia