History
The Obedience Disk is an advanced piece of technology used on on the planet Sakaar. The Red King fitted these Obedience Disks onto the chest of an individual to make sure they would follow his every command whether it was to serve him as a slave or to fight one another in his gladiatorial games. Resisting only angered the Red King, and using his spear, he channeled an electrical shock through the disks to cause massive pain. Even the Hulk and the Silver Surfer could not resist their Obedience Disks.[1]