The Rumbling

'Warning: The following article contains spoilers for a future Bro Warriors'' project that has not been teased or released yet. Read at your own risk.'''

"It was about ten years ago. I can't even remember what happened, honestly. All I remember is hearing a large rumbling sound and then everything immediately fading to white. When I woke up in my cell, I saw that everything was run down and scorched, and most of my blockmates were wounded due to the collapse of the prison. You could ask pretty much everyone here about what they were doing during the Rumbling."

- Heat

The Rumbling was a cataclysmic event that caused the world to become barren and scorched in the future timeline.

History
Not much is known about the Rumbling, but a decade before Heat's rise to leadership of SONGBIRD, he described The Rumbling as "a large rumbling sound, and then everything immediately fading to white". It is speculated to be an attempt to eradicate the world by using giant titans that had magic weapons, called the Sentinels, or SWs (Sentinel Weapons) They used their weapons to destroy portions of the earth and then destroyed themselves, causing 90% of human life to die out. In the event that all humans were not killed, The Metal Gods (a new branch of the Chaos Legion) descended upon the Earth to subjugate humans and turn them into slaves, forming a terrifying new faction called "Hell Patrol". The Hell Patrol would scour cities and forcibly convert any living human being into cybernetic skeleton soldiers to expand their army and eventually take over the rest of the world. In addition, Hell Patrol has increasingly began to ramp up their efforts to kill and subjugate humans, creating machines out of pure scrap metal that are in the likeness of animals to search out and capture any living human subjects. They have also made massive flying fortresses, called "Hellions" that fire "Lights of Judgment" upon sectors of the Earth, capable of decimating and burning down entire cities. If a human settlement were to witness a Hellion, they would have to immediately surrender or face total destruction, which caused surviving populations of humans to give themselves up for cyber-conversion. Shortly after Hell Patrol was made, SONGBIRD was formed to strike back against Hell Patrol.

Post-Rumbling Trauma
Most people could not cope with the fact that the Rumbling occurred and immediately committed suicide whenever they saw the state of the world after they awoke from the events of the Rumbling. Many others went insane and joined a new faction, the Ravagers, a group of humans who would search and kill other humans, with a specific emphasis on Newtypes who did not use their powers for destruction but would recruit other people at their discretion.