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This object exists primarily or exclusively within the IDW Publishing continuity.
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Quotation1 The Master Emerald. The "Controller." One of the most powerful gems in the world, with the ability to neutralize the Chaos Emeralds. Quotation2
Neo Metal Sonic, Sonic the Hedgehog #8

The Master Emerald[1] is an object that appears in the Sonic the Hedgehog comic series published by IDW Publishing. Guarded by Knuckles the Echidna, it is a massive green emerald and a mystical relic of immeasurable power that rests on Angel Island, where its power keeps the island afloat in the sky; without it, the island will fall down.[1][2]


Powers and traits

The Master Emerald is a relic of immeasurable power, having been referred to as the most powerful gemstone in the world.[3] It holds unbound power in the form of extremely potent and raw energy which can be harnessed to initiate a Super State, a transformation that grants increased innate talents and other potent powers.[3] Described as the "controller", the Master Emerald also has the special ability to neutralize the Chaos Emeralds, rendering them powerless.[4]

Despite appearing inanimate, the Master Emerald possesses a degree of sentience. This allows it to pull off feats like calling out to its guardian, who shares a special connection to it, when it is in need of help.[4]

For all its powers, the Master Emerald has a few limitations. For example, it cannot neutralize the Sol Emeralds in the same way as it can with the Chaos Emeralds.[3]



For an unknown length of time, Knuckles the Echidna has guarded the Master Emerald from anything capable of posing a threat to it. Recently, however, Knuckles was forced to leave his post to command the Resistance against the Eggman Empire, leaving the Master Emerald vulnerable.[5][1] As a safety measure, the Master Emerald was hidden away on Angel Island.[4]

Fallout and the Fate of Dr. Eggman

Eventually, Neo Metal Sonic discovered that the Master Emerald was unguarded.[1] This prompted him to launch an invasion of Angel Island.[6] Taking over the island, Neo Metal Sonic fashioned himself a throne on top of the Master Emerald and a fortress around its shrine. With the gem under his control, Neo Metal Sonic possessed the means of neutralizing Super Sonic in case Sonic tried to use the Chaos Emeralds against him. Meanwhile, the Master Emerald would call out to Knuckles in distress.[4]

The Battle for Angel Island


The Master Emerald during Master Overlord's tranformation, from Sonic the Hedgehog #10.

Eventually, Sonic and Knuckles confronted Neo Metal Sonic inside his fortress in order to secure the Master Emerald. In response, Neo used the Master Emerald to transform into Super Neo Metal Sonic.[3] The Master Emerald was later secured temporarily by Shadow after he subdued Super Neo Metal Sonic. After Neo Metal Sonic had copied Shadow's biodata however, Neo Metal Sonic used it, Sonic's biodata and the power of the Master Emerald again to transform into Master Overlord. This metal monstrosity incorporated the Master Emerald into itself, effectively cutting Angel Island off from its power, meaning the island was about to fall into the sea.[2]

See also


  1. 1.0 1.1 1.2 1.3 Sonic the Hedgehog #3, "Fallout Part 3"
  2. 2.0 2.1 Sonic the Hedgehog #10, "The Battle for Angel Island Part 2"
  3. 3.0 3.1 3.2 3.3 Sonic the Hedgehog #9, "The Battle for Angel Island Part 1"
  4. 4.0 4.1 4.2 4.3 Sonic the Hedgehog #8, "Silent Support"
  5. Sonic the Hedgehog #2, "Fallout Part 2"
  6. Sonic the Hedgehog #7, "Meet the New Boss"

External links