The Klagen (クラゲン Kuragen?) is an enemy in the Sonic the Hedgehog series. It is a mass-produced, jellyfish-based Badnik created by Dr. Eggman.


Klagens are gray robots with purple and cyan coloration that appear to resemble jellyfish. It has a UFO-like disc for a head that has a single purple eye, and two arms that hang down with a disc at the end of each arm.

Game appearances

Sonic Heroes

In Sonic Heroes, the Klagen will approach the player upon getting in range. If it hovers over a character, it will capture said character by suspending them in mid-air with a tractor beam. Each Klagen can only capture one character at a time. When captured, that character cannot be switched to, which is signified by a white restricted sign over the character's icon. If the leader is captured, the player will automatically switch to a random, available teammate. Once the player destroys the Klagen, the captured teammate will be usable again. However, if all three characters are captured by separate Klagens, the player will lose a life.

Sonic Rush

In Sonic Rush, Klagens are common enemies that can be found in the underwater sections of Water Palace, though they are not able to capture characters in this game. Instead, there are two variants of the enemies each with different abilities; one drop bombs on Sonic or Blaze and the other generates electric shields in intervals to defend themselves, harming the player if they touch it. In both cases, the Klagens can be destroyed with a Spin Jump/Axel Jump and the electric shield Klagens can also be destroyed using the Super Boost/Fire Boost even while the electric field is active without harming the player.

Sonic Generations

Two Klagens in the Nintendo 3DS version of Sonic Generations.

In the Nintendo 3DS version of Sonic Generations, the Klagens appear as enemies again. In this game, they are found in Water Palace. In gameplay, they retain their attack patterns from Sonic Rush.

In both Act 1 and Act 2 of the stage, they remain stationary on spots above underwater ground, holding their bomb. Once they spot the player, an exclamation mark displays above them. Then, they immediately leave their bomb to fall below them, causing a small explosion on the ground that is capable of damaging the player if they come with contact with it. After that, they instantly reload another bomb and so the mentioned pattern gets repeated.

In Act 1 of the Water Palace, they are rarely seen; being randomly scattered among the plentiful Gold Klagens. While in the second Act, they are more in number and mostly appear in groups.


Main article: Gold Klagen

There is a gold variant that teleports the captured team member to a location farther ahead in the level after a set period of time in captivity. Tails' description of this robot is "If that Gold Robot captures one of us it will take them away, we have to destroy it before any of us get caught".

In other media

Archie Comics

The Klagens, from Sonic the Hedgehog #269.

Main article: Klagen (Archie)

In the Sonic the Hedgehog comic series published by Archie Comics, several Klagens appeared in Sonic the Hedgehog #268, while two more appeared in Sonic the Hedgehog #269. They worked as bodyguards under the supervision of Scratch at Breeze Media.


  • The Normal Klagen has a time of about twenty to thirty seconds before it releases the captured team member.
    • Sometimes the Klagen's programming will glitch and it will keep the Team Member forever, until either the area is left or the robot is destroyed.
  • The name Klagen comes from the German word "klagen" which literally means "complain."






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