One of Stray’s best characters (besides the fluff ball you play, of course), is B-12 - your floating drone companion. B-12 is your connection to the world you are exploring. They act as both a guide and communicator and can even duke it out in combat when the need arises. With B-12, you are naked in a cruel world.
Related: Stray: Where To Find Every Memory In The Sewers
B-12 isn’t perfect, however. In fact, who B-12 is, just so happens to be one of the game’s biggest mysteries. You will get a general idea throughout the game just by playing, but a lot of context is lost if you don’t track down the most important collectable in the game - B-12’s Memories.
When it comes to Memories, you have two kinds - optional, and mandatory. Mandatory Memories are split throughout the game and reveal most of B-12’s overarching character. Optional Memories, however, delve a bit deeper into the world, and how it was before everything went to pot.
The Slums has a whopping seven Memories to find, making it the most Memory rich area in the entire game - tied with Midtown. Because of this, you will need to go on quite the adventure to find them all. What makes The Slums unique, however, is that you get two opportunities to find B-12’s Memories, as there is a convenient Slums Part 2. You can, however, grab them all on the first go around.
The first Memory on the block can be found immediately after finishing up with the Guardian. From the main plaza (where you regain control in The Slums), jump up to the nearby red vending machine. Keep on climbing up, sticking to the left as much as you can, and you will see a dead robot on a roof overlooking the plaza. Interact with it to retrieve your Memory.
The next Memory will take a little bit of work
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