Metal Knuckles

From Sonic Retro

Metal Knuckles
First seen: Sonic R (1997)
Species: Eggman's robots
Gender: None (attributed as Male)
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Not to be confused with Mecha Knuckles from Sonic Advance or Mecha Knuckles from the Archie comics series.

Metal Knuckles is a robot version of Knuckles the Echidna created by Dr. Eggman, and appears as an unlockable character in Sonic R and Sonic Superstars.

Character conception

Metal Knuckles was designed by Yuji Uekawa.

In video games

Sonic R

Sonic Channel featured Japanese language profiles of the Sonic R characters; translated, Metal Knuckles' is as follows:

Metal Knuckles

As with Sonic, Eggman prepared this secret weapon for the sake of overthrowing Knuckles, considering his existence to be a hindrance. Having the same power plant as Metal Sonic, speed and acceleration power are high, but like Knuckles, this robot can glide from high places.

[Appearance requirements] Collect 5 tokens in Reactive Factory in Grand Prix mode and finish better than fourth place to begin a one-on-one match with Metal Knuckles. Win this race and Metal Knuckles will become a possible choice on the character select screen.

Key Advice:

  • Low turning ability. To turn without losing control, you must decelerate.
  • Due to inertia, traveling on water is possible. Falling in the water may cause Metal Knuckles to become confused.
  • From a high place, aim at a shortcut without pausing.

— Sonic Channel

Metal Knuckles is often cited as the second-best racer in Sonic R, consistently beaten only by Super Sonic.

Sonic Superstars

While Metal Knuckles itself does not appear, the player can create and customize their own Metal Fighter, in the Battle Mode of Sonic Superstars, to resemble Metal Knuckles.

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Other games

Metal Knuckles was added to Minecraft as an official player skin, as part of the Sonic the Hedgehog collaboration on June 22nd, 2021[1].

In other media

Sonic the Hedgehog (Archie comics)

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Sonic the Hedgehog (IDW comics)

Metal Knuckles along with Metal Sonic and Tails Doll were temporally taken control of by Heavy King. The three of them kicked Dr. Eggman out of his fortress in Winter Caverns Zone and were sent by Heavy King to collect the seven Chaos Emeralds. Metal Knuckles flew to Angel Island to collect the blue emerald. Metal Knuckles battled his organic counterpart in Mushroom Hill Zone over the gem but the red robot cut a mushroom stem which endangered the near by Animals. Metal Knuckles got away with the blue gem while the other Knuckles was stopping the falling mushroom. The three minions of Heavy King later obtained the rest of the Chaos Emeralds, which forced Dr. Eggman to work with Sonic and his friends. When Eggman and the heroes returned to Winter Caverns Zone, Robotnik got a hold of Tails Doll and used it's antenna to take control back of Metal Knuckles and Metal Sonic. The robots then worked with Sonic's team along with Fang's team to overthrow Heavy King.[2]


Sonic R
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Characters in the Sonic the Hedgehog game series
Recurring characters
Heroes Sonic (Super, Starfall, Hyper, Darkspine, the Werehog, Excalibur) | Tails (Super) | Knuckles (Super, Hyper) | Amy (Super, Hyper) | Mighty (Super) | Ray (Super) | Espio | Charmy | Vector | Cream | Big | Blaze (Burning) | Silver (Super) | Sticks
Anti-heroes/Neutrals Shadow (Hero, Dark, Super) | Rouge | E-102 Gamma | E-123 Omega | Jet | Wave | Storm
Villains Dr. Eggman | Metal Sonic (Rocket, Neo, 3.0) | Mecha Sonic (8-bit, Mk. II, Mk. III, Super) | Fang | Tails Doll | Metal Knuckles | Chaos (Perfect) | E-Series | ZERO | Biolizard (Finalhazard) | Black Doom (Devil Doom) | Eggman Nega | Orbot | Cubot | Deadly Six (Zavok, Zazz, Zomom, Master Zik, Zeena, Zor)
Teams Sonic/Heroes | Rose | Dark | Chaotix | Babylon
Other Animals (Flicky) | Froggy | Chao (Hero, Dark) | Tikal | Pachacamac | Omochao | Chaclon | Gerald & Maria Robotnik | President | King Boom Boo | Cheese | Chocola | Vanilla | G.U.N. Commander | Wisps | Mother Wisp
One-off characters
Heroes Emerl | Marine | Lumina Flowlight | Chip | Shahra | Knights of the Round Table | Caliburn | Yacker | Avatar | Barry | Trip (Super)
Anti-heroes/Neutrals Bean | Bark | Shade | Merlina | Sage
Villains Witchcart | Hocke-Wulf | Bearenger | Carrotia | Battle Kukku Army (15th, 16th, Dr. Fukurokov) | E-101 Beta | Void | Chaos Gamma | Gemerl | Shugo-hei | Iblis | Mephiles | Solaris | Erazor Djinn | Captain Whisker | Johnny | Master Core: ABIS | Ix (Super) | Dark Gaia | King Arthur | Hard Boiled Heavies | Infinite | The End | Mirage Express
Teams Vector | Eggman
Other Birdie | Illumina | Secretary | Elise | Duke of Soleanna | Sonic Man | Coconut Crew | Vikings | Professor Pickle | Wentos | Don Fachio | Dodon Pa | Koco | Ancients | Conductor | Conductor's wife | Ariem | Heavy | Bomb | Tiara Boobowski | Honey