The Breach (also known as the Portal) is a fissure located off the coastline of China near Guam on the floor of Challenger Deep in the Pacific Ocean. It connects the Earth to the Anteverse, the homeworld of the Precursors and the Kaiju.[note 1]
The Breach is said to be atomic in nature. It uses energy stemming from the activity in the Earth's tectonic plates to maintain a stable connection to allow Kaiju to pass through its "throat". The Breach folds space-time to close the extreme distance between two points; the energy required to maintain that connection, however, makes the Breach itself vulnerable to attack.
The electromagnetic signatures given off from its physical structure suggests that the dispersal of energy greater than its own would destabilize the Breach and destroy it, sealing Earth off from the Anteverse. Courtesy of Newt's and Hermann's experiment, it is revealed that only a Kaiju can leave or enter the Breach.
The inside of the Breach is purple and blue, lined with organic circuitry and pulsing with electromagnetic energy. At the bottom end of the Breach are several sphincter-like gateways that lead to the Anteverse.
On August 10, 2013, the Breach was opened on the floor of Challenger Deep in the Mariana Trench between two tectonic plates. Upon opening, Kaiju began to move through the portal towards various cities located on the Pacific Rim.
In conjunction with fighting the Kaiju with Jaegers, the Pan Pacific Defense Corps attempted to use conventional weapons against the Breach. Their efforts proved unable to penetrate the Breach itself, continually bouncing off of the ocean floor.
In 2025, the Jaegers assaulted the Breach directly and were attacked by Raiju, Scunner and Slattern. After the sacrifice of Striker Eureka and its pilots, Stacker Pentecost and Chuck Hansen, the Breach was finally destroyed by Gipsy Danger when its pilot, Raleigh Becket, set the Jaeger on self-destruct inside the Anteverse.
- Raleigh: “We always thought alien life would come from the stars, but it came from deep beneath the pacific — a portal between dimensions in the Pacific Ocean,”