James Dean was an actor.
Ace met James Dean in 1959. James Dean called himself Jimmy. Ace was surprised to see that the movie star was still alive, while everyone thought that he was killed in a car crash in 1955. Dean and Ace started dating. Ace even became pregnant with Dean's child. However, Ace was killed by George Limb and their child was never born. When James found out about his unborn child, he turned against Limb and travelled back through time. He died in the car crash as he was destined to do. Later the Doctor travelled with an alternative version of Ace. This alternative version was hardly any different from the original. (PROSE: Loving the Alien)
When Space Pilot 692 7896 was going to die in a solo spacecraft after a total systems failure, she thought of James Dean. Dying that way was not the glorious exit that she had expected, but she had an in-flight recorder on board of the spacecraft. She thought that she would be immortalised on camera like Marilyn Monroe, James Dean and River Phoenix. (HOMEVID: Mindgame Trilogy[which?])