Space hero, gadget guru, robot blaster, Ratchet has had plenty of experience piloting fast vehicles in his adventures, and this Lombax puts those talents to good use on the race tracks of Jak X.”— Ratchet character description, Jak X: Combat Racing
Ratchet and Clank are the main protagonists of the Ratchet & Clank series. Created by Insomniac Games, the characters have made cameos in the Jak and Daxter series, and have appeared in other games alongside Jak and Daxter. Likewise, Jak and Daxter have made similar cameos in Ratchet & Clank games.
In Jak 3, Ratchet and Clank appear as civilian targets in separate Ratchet and Clank gun courses. The duo returns in Jak X: Combat Racing, with Ratchet appearing as an unlockable racer with his own description, and Clank appearing on a pennant for purchase from the secrets shop for 40,000 Precursor orbs. To unlock Ratchet, a save file from Ratchet: Deadlocked must be present on the memory card.
Collectible masks resembling Ratchet and Clank appear in Daxter, the former found in the transit system during the mission "Take care of bugs in transit system", and the latter found in the first tanker mission, "Collect 30 gems from the tanker".
Lastly, Daxter references Clank in the Jak and Daxter: Trilogy movie, saying, "As you can see Jak and I can take out any robot that boots up, even cute talking ones that like to 'clank' around. Yeah, that's right, I said it!"
Ratchet and Clank appear as co-main protagonists in PlayStation Move Heroes alongside Jak and Daxter, and Sly Cooper and Bentley from the Sly Cooper series. Ratchet and Clank also appear in PlayStation All-Stars Battle Royale, serving as the story rivals to Jak and Daxter.