The asteroid dimension was a dimension filled with asteroids flying through vast empty space. In the final battle with Percival Tachyon, Ratchet and Clank were pulled into this dimension by him, whom they thought was dead when he was sucked in. The final battle continued in this dimension, and as the large asteroid they were standing on began to completely break apart, until Ratchet destroyed Tachyon's throne, sending him falling to the ground. He then arose and declared vengeance. The Dimensionator then malfunctioned and opened up a dark wormhole. Thrown off the crumbling asteroid, Tachyon fell into this portal and was trapped within an alternate dimension. Before a similar fate could befall them, Ratchet and Clank fixed the Dimensionator with the Hexagonal Washer to get back to their home dimension.
- Tachyon piloting his throne
- The actual location in the game coding of the Asteroid Dimension is underneath the area where Talwyn activates the bridge on Fastoon. There is a glitch where when you try to activate all of the button; if you are at the button on the right side and you use the Razor Claws on a Cragmite on the button, you might fall through the ground and if you keep gliding down you reach the Asteroid Dimension.