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Silent Ku (沈黙のクウ Chinmoku no Kū) is one of the Mighty Quartet; General Szabo's subordinates, in the Blue Dragon series.


Silent Ku is a grey, yellow and red floating Mecha Robo. He has a slim grey head with a yellow face and orange eyelids and chin. He has a thin orange cylinder atop his head with orange rivets below it. There is also a scar that goes across the left side of his face. His torso is red with the Gran Kingdom symbol on his chest. His arms are grey and thin with big spheres at his joints. His lower arms are thicker and red with grey hands and yellow jointed fingers. The bottom half of his body floats like his comrades and Szabo. Its grey with oval shaped extrusions and a yellow tip at the bottom. He wears a brown non-metal belt with holsters for two silver hand guns that he uses in battle.

Grand Silent Ku has an altered appearance like the rest of the quartet. His left eye appears damaged showing his whole eyeball. He has a bigger belt that goes over his shoulders and has straps for ammunition. There are also metal shoulder pads under the top of these straps. His lower arms now have additions of a teal covering as well as one that looks like tires.


Blue Dragon[]

Silent Ku is awoken by Szabo when the party attacks the flying fortress. He is the first Mecha Robo fought. Even though the party defeats him, he reappears with his comrades later on as Grand Silent Ku and fights alongside them instead of one by one. His last appearance is in the Primitive Cube where he forms Ultimate Szabo with the other Mecha Robo. He forms the torso part of the machine.

Blue Dragon Plus[]

Silent Ku reappears in Blue Dragon Plus alongside the rest of the quartet. Their goal is to remove Szabo's Eternal Engine to make him evil again and return to their side. Silent Ku only appears as Grand Silent Ku in this game however he retains his usual name in dialogue in the Monster Book.

Blue Dragon: Awakened Shadow[]

Silent Ku and the quartet's role in Awakened Shadow is similar to Plus where they want Szabo to join their side again. In this game, they are capable of making weaker clones of themselves (that are blue coloured instead of red) that act as minor enemies in their stage. They tell him how they despise the idea of a peaceful world and want to cause chaos with Destroy. Despite Szabo's pleas for them to join him, the quartet fuse with Destroy. Once defeated, they disappear and Szabo mourns them.


In the anime, Szabo sends the quartet to attack Jiro and Minotaur. They fuse into Ultimate Szabo in the anime too however their combination is different. Silent Ku acts as the arms in this version of the form.


  • Double Shot: shoots a party member twice
  • Gunman Mode
  • Cowboy Formation
  • Multi-Shot: shoots a party member three times



  • " invader? You may call me... Silent Ku... ... my style, my technique... you will die!" (first appearance, Blue Dragon)
  • "Let's roll, guys!" (Grand mecha-robos fight)
  • "Die!" (using a special attack)


  • His name is Double Blaster Ku in the English dub of the anime
  • Silent Ku's design is based off a cowboy