Mobius Encyclopaedia

Black Comet

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Two Memories
This article is in need of being split into two articles according to continuity.
Black Arms vs Xorda

The first Black Comet in the war above Argentium.

The Black Comet was a celestial object and the mobile homeworld of the Black Arms led by Black Doom. The comet is capable of traversing the galaxy, allowing the Black Arms to attack and consume the populations of worlds they come across. The comet approached Mobius fifty years ago, and Black Doom contacted Professor Gerald Robotnik and aided him with his Project Shadow, with Doom planning to use Shadow the Hedgehog as an agent.


The Black Arms were defeated upon their return to Sonic's world by Shadow, and the Black Comet was destroyed by the Eclipse Cannon of the Space Colony ARK. However, a second comet later entered the planets orbit during the Shattered World Crisis. (SU: #59)

The comet departed soon thereafter, and while on its return trip to Mobius the Black Arms ran afoul of the Xorda, another alien race with its own claim to Mobius. The two races began warring, with the Black Comet currently in orbit around the ravaged Argentium. (StH: #169, #170, #171; CSE)

Background Information

  • The events of the comics in both continuities seem to indicate that the Black Arms are capable of steering their comet home worlds to some degree, as the Black Comet did not simply return to Mobius 50 years after Shadow's creation as it seemed to do in the Shadow the Hedgehog game.

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