- You may be looking for Jason Kane's friend.
Mira (pronounced: MY-rah) was a planet that was nearer Kembel than Earth. It was a foggy, marshy world, covered in scrubby vegetation. It was the homeworld of the Visians, an invisible, predatory species. According to the First Doctor, Mira supported no other sentient life.
In the year 4000, Mira was the selected destination for a test of a new long-range faster-than-light transport system conducted on Earth by scientists Froyn and Rhynmal. The test was originally intended to send two lab mice to Mira, but the First Doctor, Steven Taylor, and Sara Kingdom were also transmatted there when they accidentally barged into the test chamber at the last moment. Because the cage containing the mice also contained a transmitter, the Dalek taskforce on Kembel were able to track the Doctor to Mira and dispatch a taskforce to capture him and retrieve the taranium he had stolen from them. However, a battle between the Daleks and the Visians enabled the Doctor and his companions to escape in the confusion, and they eventually escaped from Mira by stealing the Daleks' ship. (TV: The Daleks' Master Plan)