C.Y.R.I.L.

C.Y.R.I.L. was a robot who existed at the periphery of the Sixth Doctor and Frobisher's travels.

The two time travellers once walked past C.Y.R.I.L. as he was waiting in line to see a tattooed man at the Ringway Carnival. (COMIC: Once Upon a Time-Lord)

C.Y.R.I.L. once went fishing for Gumblejacks with the Doctor and Frobisher. When the Seventh Doctor came to find a piece of the Key to Time, C.Y.R.I.L. stayed on the other side of the stream chatting with Frobisher. (COMIC: Time & Time Again)

Behind the scenes
C.Y.R.I.L. was an "editor droid" who was worked for Marvel UK, appearing as a regular character in Star Wars Weekly, where he had an ongoing back-up created by Steve Parkhouse and John Ridgway. Ridgway included C.Y.R.I.L. among the Sixth Doctor's allies in an illustration in DWMS Tenth Anniversary Special celebrating his era of the comic.