I'm your friendly warden…
―The Prison warden introducing himself to Ratchet  [SAC]

The Prison warden was the robotic warden of the Prison Planet, who had an accent (that sounds much like that of a southern U.S.-type accent). He was easily corruptible, as he was payed under the table to make Ratchet's stay at the prison "less than hospitable" to the point where he gave some groups of vengeful criminals that Ratchet sent to the prison the right to kill him, and refused to protect Ratchet (so that he thus had to protect himself). He was also extremely gullible, as he repeatedly believed that it was Ratchet's birthday every time a cake arrived, which happened to be stuffed with a new weapon from Clank.