The way the Ratchet & Clank wiki capitalizes words has changed; therefore, this article should be checked, and, if necessary, capitalization should be fixed.
The Mapper was a MegaCorp device that strongly resembled Gadgetron 's Map-O-Matic. The device revealed secret locations and hidden goodies on the map. Ratchet and Clank found it in the Moon City after they defeated the Mothership.
- Ratchet & Clank: Going Commando (first appearance)