Sonic News Network

Know something we don't about Sonic? Don't hesitate in signing up today! It's fast, free, and easy, and you will get a wealth of new abilities, and it also hides your IP address from public view. We are in need of content, and everyone has something to contribute!

If you have an account, please log in.


Sonic News Network
Sonic News Network
Main article Gallery

The Master Emerald (マスターエメラルド Masutā Emerarudo?) is an object that appears in the Sonic the Hedgehog series. It is alternate version of the Master Emerald from another dimension set in the recent past. Like its counterpart, it is a massive gem of immeasurable power guarded by Knuckles the Echidna that is used to keep Angel Island floating in the sky.



The Master Emerald is a very large green gemstone with a simplified diamond cut design.

Powers and traits

Metal Sonic harnassing the power of the Master Emerald, from "Metal Mayhem".

Like its mainstream counterpart, the Master Emerald is a very powerful gemstone. Possessing immense amounts of Chaos Emerald energy, its power can be harnessed by other beings and robots to empower them.[1]




Sonic the Hedgehog 3 & Knuckles

In the recent past, the Master Emerald came under threat when the Death Egg crashed on Angel Island. Knuckles encountered the ship's creator and pilot, Dr. Eggman, who convinced the somewhat guidable echidna that Sonic the Hedgehog and Miles "Tails" Prower, both on the doctors tail, were on their way to the island to steal the Master Emerald. As Knuckles went on to confront the duo, the doctor took the opportunity to steal the Master Emerald himself as a power source to re-launch the Death Egg, much to Knuckles' humiliation at realizing he had been tricked. With Knuckles' help, Sonic managed to get on board the Death Egg as it launched and returned to the surface, Master Emerald in hand, and returned it to Angel Island, allowing the island to arise once again. The Master Emerald was soon after nearly stolen by Eggman's robots, but Knuckles was able to prevent that theft.

Sonic Mania

In Sonic Mania, some time after Sonic prevented Dr. Eggman's theft of the Master Emerald,[2] the gem's power over Angel Island got overwritten by the Phantom Ruby when the jewel landed on the island, causing Angel Island to fall into the sea again.[3]

The Heavy King attempting to steal the Master Emerald, from Sonic Mania.

Some time later, the Heavy King, the leader of Dr. Eggman's Hard Boiled Heavies, made an attempt to steal the Master Emerald from its altar in Hidden Palace Zone, like his creator had tried before-hand. When Knuckles intervened, the Heavy King used his scepter to absorb the Master Emerald's power and unleash various types of attacks against Knuckles. However, the Heavy King retreated without the Emerald upon being defeated.

Sonic Mania Plus

In Sonic Mania Plus, the Heavy King attempted to steal the Master Emerald from its altar in Hidden Palace Zone once again. However, Sonic, Tails, Knuckles, Mighty and Ray arrived on the scene during the theft and kept the Master Emerald from being stolen. In response, the Heavy King tried to defeat the heroes using the power of the Master Emerald that he harnessed via his scepter. In the end though, he was defeated, prompting him to retreat.

Sonic Mania Adventures

Knuckles carrying the Master Emerald, from "Sonic and Tails".

Around the time of Sonic's return, Knuckles took the Master Emerald from its shrine and began bringing it across Angel Island.[4] His reason for doing so was to find a safer place to keep the gem after so much trouble had begun coming to Angel Island following Sonic and Eggman's arrival. After Knuckles found a place in the jungle for it, he encountered Ray, who was looking for Mighty. However, Knuckles ended up throwing Ray away when he tried touching the Master Emerald. When Knuckles then got occupied with some RhinoBots, Eggman flew by in the Tornado and stole the Master Emerald. Being only able to see the Master Emerald being taken away by the Tornado, Knuckles assumed Sonic was the thief.[5]

Knuckles departs with the Master Emerald, from "Metal Mayhem".

After Sonic, Tails, Mighty and Ray triumphed over his Chaos Emerald-empowered Metal Sonic, Eggman tried empowering Metal Sonic with the Master Emerald instead. However, both villains were defeated by Knuckles before they could do anything, allowing Knuckles to reclaim the Master Emerald.[1]

In other media

IDW Publishing

In the Sonic the Hedgehog comic series and its spin-offs published by IDW Publishing, the Master Emerald is a powerful gemstone on Angel Island that is guarded by Knuckles.

See also


  1. 1.0 1.1 Hesse, Tyson (17 July 2018). "Metal Mayhem". Sonic Mania Adventures. Season 1. Episode 5. YouTube.
  2. Sega. "Story So Far". Sonic Mania Introduction Manual. Sega. p. 1. "Some time after saving Angel Island, Sonic the Hedgehog and his best friend, Miles "Tails" Prower, are relaxing when Tails picks up a strange energy reading far away. Though different from the Chaos Emeralds, the reading is remarkably powerful, and Tails convinces Sonic to join him to check it out. Sonic and Tails take off on the Tornado towards the source, but sure enough, the evil Dr. Eggman has detected it too! Now it's a race between Sonic and Eggman to get there first and figure out what mysteries it holds. However, Eggman has been busy: he's just unleashed a new team of elite Egg-Robos to handle his most important tasks. They're called the "Hard-Boiled Heavies," and they're about to reach the source of the signal first! It's up to Sonic, Tails, & their newest ally, Knuckles the Echidna, to defeat the Hard-Boiled Heavies, unlock the secrets of the energy source, and stop Dr. Eggman!"
  3. Live Sonic Mania Developer Playthrough (6:30:00). Stealth (20 August 2017). Retrieved on 22 August 2017.
  4. Hesse, Tyson (30 April 2018). "Sonic and Tails". Sonic Mania Adventures. Season 1. Episode 2. YouTube.
  5. Hesse, Tyson (31 May 2018). "& Knuckles". Sonic Mania Adventures. Season 1. Episode 3. YouTube.

Main article | Staff | Glitches | Manuals | Beta elements | Gallery | Re-releases (Plus)