With the death of Handsome Jack and The Warrior, the truly badass vault hunters discovered that the key used to wake The Warrior was also a map that showed the locations of hundreds of more vaults. Despite the fact that Brick had called 'dibs' on apparently all of the vaults, he couldn't leave Pandora, and neither could Lilith or Mordecai. Their home was Pandora, and they couldn't simply leave it. The Crimson Raiders needed a new leader, and the ex-vault hunters were the perfect people for the job. 

Where did that leave the newest generation of vault hunters?

With a little help from the Crimson Raiders, as well as some 'help' from the Hyperion Corproation, they were able to get themselves a ship that was truly worthy of such amazing Vault Hunters. They couldn't just fly around in a Hyperion ship from planet to planet, NO. They beefed that baby up with as much cool stuff as humanly possible... And then some. The Crimson Hunter was a ship like no other, with top of the line science-y stuff, a supercomputer with the locations of all Hyperion controlled planets and outposts, a bunch of other things, and even a containment cell for the last CL4P-TP unit in existence. They couldn't let such a thing just wander around the universe!

Several years passed, and the group of vault hunters became know far and wide for being some of the few to actually get into a vault and survive. They were rich beyond belief, even with most of their findings going towards helping the Crimson Raiders expand and become more than just protectors of Pandora. They became protectors of galaxies. But enough about the Raiders. 

As they went on, the vault hunters realized that there was no real reason to continue. They were already impossibly rich, infamous, and powerful. They had decided that the only thing they could do now was  Give some new vault hunters a push into the right direction, much like Bunkers and Badasses. They were the Bunkermasters, and the vault hunters they chose would be the players.