Derek Johnson
The DJ was the DJ for the funeral home Tranquil Repose on the planet Necros. The DJ would entertain the resting consciousness' of the Resting Ones by playing 1950s and 1960s (Earth time) music for them. He would also give messages from still living loved ones.
Though he had never visited Earth, his grandfather visited the planet and brought back records. The DJ loved the sound of the old American DJs and based his style of presentation on them. The DJ had an English accent but used an American one when playing music. From his studio, the DJ could see use cameras to look into Tranquil Repose and the surrounding area. He could also communicate with people over an intercom.
When Tranquil Repose had been taken over by the Great Healer, really Davros, DJ still played his music since it didn't aggravate the Great Healer. When the Doctor and Peri visited Tranquil Repose, Peri went to see the DJ, seeing his program and thinking he was from the States. Wanting to capture Peri, Davros sent his Imperial Daleks to retrieve her and to destroy the DJ.
While Peri used the DJ's radio to tell President Vargos, who was arriving on the planet for his wife's funeral, not to land because of the Daleks, the DJ rigged up an ultra frequency gun of Rock n' Roll. When the Daleks arrived, he destroyed two of them. When he got up, another Dalek entered and exterminated the DJ. (DW: Revelation of the Daleks)
