"The Locker is a storage center, diner, and home away-from-home for all Galactic Bounty Hunters. It has 350 levels, and wall one hundred meters thick. The spaceport receives thousands of ships each month. Space Hunters who recover pirated cargo are allowed to keep half of what they salvage."
"There are thousands of hotel rooms, each specially adapted to conditions on any Space Hunter's homeworld. The Locker also contains restaurants, recreational facilities, a medical complex, and a trading bazaar. Each Space Hunter has his/her/its own locker, to store souvenirs, armaments, and personal belongings. Each locker connects by a warp zone to its own dimension--Creating a huge storage area that takes up no space in this world."
Various floors are accessible via a Gravulator, a floating platform elevator that houses smaller storage compartments (including mechs, tanks, cars, air/spacecraft). Samus Aran has a personal storage area on Level 200, where she stores a myriad of treasures, weaponry, and large assault vehicles. The door, labeled: Samus Aran, (skull image) Private Property, Keep Out, is locked with a Warpkey that Samus carries. The storage room is actually in a pocket dimension, so Samus does not have to fear robbery since the room does not actually exist without the key. As large as the storage room is, containing dozens of aisles of her property, she claims that she wasn't able to afford a larger one. Among the many items contained within is the Medusa Ray, which is featured prominently in the comic in which the Locker appears.
- Simillar resting/docking areas were shown in the beginning of the Metroid Manga and Super Metroid comic. Most of the unnamed Bounty Hunters here have armored suits similar to Samus, though recolored. Later Bounty Hunters such as Armstrong Houston and Weavel seem to have continued in this tradition.
- "When Friends Fall Out": 
|Space Stations in the Metroid Series|
|Note: Italicized stations were visited by Samus Aran.|
Underlined stations were destroyed.
|Metroid | Sidehopper Station|
|Celestial Archives | Vesper Defense Outpost | Oubliette | Head Shot | Outer Reach|
|Cosmos region A47|
|Biologic Space Laboratories research station|
|Ceres Space Colony | Diesel's Junk Shop | The Locker|
|Species||Alimbic • Boost Guardian • Chozo (Ghost) • Dark Pirate Commando • Darkling • Darkling Tentacle • Gorea • Ing (Hunter, Emperor, Warrior) • Ingsphere Cache • Kralee • Leviathan • Luminoth • Phantoon • Warp Hound • Phazon Metroid|
|Gateways||Alimbic Cannon • Artifact Temple • Portal • Stronghold Portal • Wormhole|
|Alternate Dimensions||Dark Aether • Infinity Void • The Locker • Oubliette • Stronghold Void|
|Other||Black fog • Dark Visor • Darkburst|