Mecha Knuckles (メカ ナックルズ[1] Meka Nakkuruzu?), also known as Mechanical Knuckles,[1] is a character that appears in the Sonic the Hedgehog series. It is a robotic doppelganger of Knuckles the Echidna created by Dr. Eggman during an attempt to establish his Eggman Empire.


Red mecha knux.gif
Mecha knux.gif

In its first form, Mecha Knuckles looks near-identical to the real Knuckles, except that its fur is magenta instead of red, its eyes are blue instead of purple, and it wears yellow gloves instead of white.

In its second form, while Mecha Knuckles still maintains the basic body shape of the real Knuckles, it sheds its fur skin to reveal a metallic gray color scheme covering most of what would have been Knuckles' organic body. It also has a wider and mechanical-looking mouth and visible robotic joints, and its shoes become predominantly gray and yellow. Its eyes are also revealed to be pupil-less red optics made up of hexagonal pieces.


Sonic Advance

In Sonic Advance, Dr. Eggman used Mecha Knuckles to stop Sonic the Hedgehog, Miles "Tails" Prower, Knuckles the Echidna and Amy Rose when they arrived at Angel Island Zone. The heroes appeared slightly stunned seeing the Knuckles doppelganger robot but nonetheless fought against it. Even with its surprising and more powerful second form unveiled at the edge of defeat, Mecha Knuckles stood no chance against the heroes, causing it to malfunction from damage and explode into pieces, forcing Dr. Eggman, who was observing the battle, to flee.

Powers and abilities

As a robotic doppelganger of Knuckles, Mecha Knuckles retains most of the abilities its organic counterpart possesses, including the ability to Spin Jump, glide and Spin Dash. However, in its second form, it gains the ability to fire accelerating homing missiles out of its mouth at high speeds at its enemies.


Mecha Knuckles is the boss of Angel Island Zone in Sonic Advance, and the fifth boss overall. It is battled with Sonic, Tails, Knuckles or Amy at the end of Angel Island Zone Act 2.

Boss guide

At first, Mecha Knuckles will attack by either a Spin Jump followed by glide towards the player, a Spin Dash, or a Punch Attack at close range. It is best that the playable character avoids Mecha Knuckles when it uses the Spin Dash and avoids attacking it from the front when it glides, or they take damage. The robot will also block attacks such as the Punch Attack, the Hammer Attack, Tail Swipe, etc., but will be vulnerable to these attacks while revving its Spin Dash. When Mecha Knuckles glides, the player can also hit it with a Spin Jump from anywhere besides the front or a Hammer Attack to damage it. Also, the player can still attack the robot while it is falling after gliding or standing still.

Once it has been hit four times on Normal mode, or three on Easy mode, Mecha Knuckles will unveil its second form. In this form, Mecha Knuckles still uses the same moves as before, but will become faster and more aggressive. In addition, it will fire homing missiles at the player which can be difficult to dodge as they must jump at a specific moment to avoid them. Mecha Knuckles must be hit another four times on Normal mode, or three times on Easy mode, to defeat it and end the boss fight. The player must then wait for the capsule to land before pressing it to finish the Act.


  • In the Sonic Advance Hisshō Perfect Guide, Mecha Knuckles' name is written as "Mechanical Knackles" in English.[1]
  • This boss fight is similar to the battle against Knuckles in Sonic & Knuckles.


  1. 1.0 1.1 1.2 Aspect (2 August 2002). ソニックアドバンス必勝パーフェクトガイド (in Japanese). pp. 64. ISBN 978-4757209145. Retrieved May 19, 2018.

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