The way the Ratchet & Clank wiki capitalizes words has changed; therefore, this article should be checked, and, if necessary, capitalization should be fixed.
| "What? Klink, Clank? Clank, that is what I said."
The spelling of "Grathorian" is conjectural, meaning that the name itself is canonical, but it is unknown as to how it is spelled.
Grathorians were a sentient species. The Tachyon Robot briefly mentioned them in Zordoom Prison on planet Viceron, stating that any prisoner that smuggled in contraband GrummelNet items would be forced to listen to Grathorian folk music, which apparently was torturous to listen to.
- Ratchet & Clank Future: Tools of Destruction (mentioned only)