What is "kryten"

Kryten is a fictional character in the British science fiction situation comedy Red Dwarf. The name Kryten is a reference to the head butler in the J.M. Barrie play The Admirable Crichton. Originally referred to as a Series III mechanoid, he is later described in the show as a 4000 Series, or Series 4000.

In their original plan for the series, Rob Grant and Doug Naylor had specified that there would be no aliens and no robots. Following the success of the first appearance by the Kryten character, Naylor convinced Grant to bring him back.

In the character's first appearance, originally only intended as a one-off, Kryten was played by actor David Ross but the popularity of the character meant that Kryten was introduced as a regular in Series III. The intention was to bring Ross back to play the role, but he was not available at the time and the position was filled by Northampton-born actor Robert Llewellyn, whose performances as Kryten from series III resulted in even greater popularity of the character. David Ross later returned to voice Talkie Toaster in the series IV episode " White Hole".

"Kryten" is the seventh episode from science fiction sit-com Red Dwarf, the first from series two, and was first broadcast on BBC2 on 6 September 1988. Written by Rob Grant and Doug Naylor, and directed by Ed Bye, this episode introduced the mechanoid character Kryten. The episode was re-mastered, along with the rest of the first three series, in 1998.