"The primary character from the series Rachet & Clank
Ratchet, a Lombax mechanic presently residing on the Apogee Space Station, from the planet Veldin, is normally accompanied by his robot sidekick Clank, who was originally from a robotic line designed for causing destruction but accompanies Ratchet due to the robot line's assembly computer altering him for purposes of good. The player controls Ratchet for a majority of each game within the Rachet & Clank Series, though certain missions will require the player to directly control Clank."
Source: Wikipedia, "Rachet_and_clank", available under the CC-BY-SA License.