The Emerald Chamber is the nerve centre of the Floating Island. This chamber is where the Chaos Emeralds are kept and where Knuckles the Echidna can observe all activities taking place on the island. From here, the island's defensive systems are controlled as well, with control terminals surrounding the well where the Chaos Emeralds are suspended. Ajacent to the chamber is a library containing numerous scrolls and documents regarding the island's defenses and hidden treasures.
Several key events occured in the Emerald Chamber. It was first seen when Metallix Mark 2 infiltrated the building and stole the Master Emerald. A Guardian Robot under the control later destroyed the Emerald and absorbed its power, so Knuckles was forced to replace the Emerald with its head before he retrieved a new one. The chamber was subsequently destroyed by the reactivated head when it realised its energy was being stolen. It was here that Sonic the Hedgehog slipped into the Emerald column, absorbing far too much Chaos energy and kickstarting the events that would lead to hs separation from Super Sonic. It was also the place where Doctor Robotnik became a God after a failed invasion by the Drakon Empire, but was also where he was defeated and shrunk down to Shanazar. From this room, Knuckles, Tikal and the Chaotix Crew co-ordinated the defence of the Floating Island from the New Robotnik Empire.
- Issue 49 to Issue 50 - Count Down to Disaster
- Issue 51 to Issue 52 - Disaster!
- Issue 53 - Total Chaotix
- Issue 59 - The Revenge of Trogg
- Issue 65 to Issue 68 - The Homecoming
- Issue 73 - New Master Emerald
- Issue 75 - The Ghost Ship
- Issue 80 - Running Wild
- Issue 97 - Victims
- Issue 101 - Loose Ends
- Issue 121 - On The Run
- Issue 124 to Issue 126 - Order & Chaos
- Issue 127 - Robotnik Reigns Supreme
- Issue 130 - Showdown
- Issue 135 to Issue 138 - The Take-Over
- Issue 148 - It's A Small World
- Issue 150 - Robotnik No More? (flashback)
- Issue 177 - Night Terrors!
- Issue 178 - Splash-Down!
- Issue 225 - The Lost World
- Issue 226 - In the Heat of the Night
- Issue 229 - Trouble in Paradise
- Issue 238 - The Sky Is Falling
- Issue 243 - Vichama Is Coming Home
- Issue 243 - The Debt Collectors
- Issue 248 - The Prisoner
- Issue 250 - The Battle For Mobius