When Rimmer made contact with his brother Howard aboard the Columbus 3, he wanted to pretend that he was a captain so as not to be embarrassed when his more successful sibling arrived. To this end, he convinced the Boys from the Dwarf to masquerade as his senior officers. They put on the dead crew's uniforms and insignia and took their places on the bridge.
When Howard beamed aboard with Sim Crawford, Arnold explained that he was the ship's captain and proceeded to introduce his officers.
Kryten was renamed Kryten Krytenski, the vessel's flight co-ordinator. Howard suggested that mechanoids were outdated and that simulants were a better choice. Arnold insisted that he preferred to work with the deranged and underprivileged. He described how he had found the burnt-out wreck "Krytenski" on a junk heap. Howard was impressed that Arnold had repaired and upgraded the damaged mechanoid, but Arnold claimed to have simply hosed him down and given him a hat. (RD: Trojan)