The duo can be rescued in the Gungeon which will allow them to open a store in the Breach where you can purchase new guns and items with Hegemony Credits to unlock allowing them to appear in the Gungeon. Once you have a shortcut established to the second Chamber he'll open a room in the Breach for you to access these shortcuts. He'll be found in the Gungeon Proper entrance waiting to meet you before you can speak to him in the Breach.

The engineer who fixes the elevators in the Gungeon.

This blue creature sits outside the Halls of Knowledge and tells you tales about his companions in the Breach as well as the bosses you've defeated. When taking a shortcut via the Tinker to the Black Powder Mine, Hollow, or Forge you'll see him in a disguise to offer you a free gun. If you come into a room while he is stealing you can shoot him to interrupt his thievery. If you leave ammo, armor, items, or guns laying on the floor of a room that you are no longer in then the Resourceful Rat will steal it and leave a note thanking you for being a chump. This sneaky rodent will take anything you leave behind. He sells you items for a fair price, but if you fire a weapon too many times in his store or get caught stealing then he'll open fire, take all the items on sale away, and kick you out. The owner of the stores in most of the chambers. Defeating Blockner will cause Ser Manuel to appear in the Breach where he'll reward you with the Betrayer's Shield and the Badge. He is only found in the Halls of Knowledge until you discover his secret and learn about Blockner's betrayal. He isn't a threat to you, especially since he is already dead after being shot in the back by Blockner. He will teach you how to survive in the Gungeon and is also your first challenge. The knight who watches over the Halls of Knowledge.

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