A Proton Pack is a fictional piece of equipment from the Ghostbusters franchise, designed to capture and contain ghosts. It consists of a backpack-like unit that generates a proton stream, which is used to ensnare supernatural entities. The pack is powered by a nuclear reactor and features various controls for adjusting the intensity and direction of the proton stream. In the Ghostbusters films and animated series, the Proton Pack is an essential tool for the ghost-hunting team. It is often depicted alongside a Ghost Trap, which is used to securely store captured ghosts. The Proton Pack has become an iconic symbol of the franchise and is recognized by fans worldwide.