After Imperator Ix opens a wormhole to the Twilight Cage using the power of the Master Emerald, Sonic's team realize they will have to pursue the megalomaniacal echidna inside to thwart his plans of global conquest. This means they need a ship: and so Chapter 6 sees Sonic and Shade exploring Metropolis Ground Zero for the necessary components. Eggman and Tails are not playable during the chapter, remaining instead within the Doctor's weapons lab to assemble the vessel.
The Cyclone serves as the party's base of operations throughout the second part of The Dark Brotherhood, as well as their means of travel from one Twilight Cage planetoid to the next. The vessel is robustly built, surviving a crash-landing on the Kron Colony, an energy-leeching on the N'rrgal Colony, tractor-beam impounding on the Zoah Colony, and a full-scale space battle around the Nocturne. Ironically, the Cyclone is finally shot down by one of its own creators, when Eggman back stabs the heroes after their escape from the Cage.
|Sonic Chronicles: The Dark Brotherhood|
|Playable characters||Sonic | Tails | Amy | Knuckles | Rouge | Big and Froggy | Cream and Cheese | Eggman | Shadow | Omega | Shade | Super Sonic|
|Other characters||G.U.N. | Commander | Nocturnus Clan | Ix | Nestor | Super Ix | Gizoids | Emerl | Scylla | Charyb | Knuckles Clan | Egg Bot | Swatbot | Krag | Syrax | Raxos | Haniman | Queen N'rrgal | Thebes | Thelxe | Overmind | Twilight Cage Pirates | Precursors | Chao | Argus | Vector|
|Places||Green Hill Zone | Central City | Blue Ridge Zone | Mystic Ruins | Angel Island | Metropolis | Metropolis Ground Zero | Kron Colony | Twilight Cage | Zoah Colony | N'rrgal Colony | Voxai Colony Alpha | Voxai Colony Beta | Nocturne|
|Other||Dexter | Argus event | Sequel | Archie Prequel|