In the doctor who series years gone past i can remember an arch enemy i think called the master whom i think killed the doctor a few times causing him to regenerate.Does anyone know if this character will feature in the new doctor who as all the other foes such as the daleks and cybermen have.cheers.
Also The Master was living on borrowed time during the later years of the series.During Tom Baker's last 2 stories he had used up all his regenerations and was in a very bad way until he somehow took over the body of a character called Tremas in which he carried on until the end of the McCoy years.Then in the Paul McGann tvmovie he was executed by the Daleks and The Doctor was tasked with returning his remains to Gallifrey,but he had learned a trick for cheating death and he was trying to take over the Doctor's body but instead ended up in that of a paramedic.