K-9 was created by Professor Marius in the year 5000. The Doctor and his companion Leela helped Professor Marius defeat an alien virus. After the virus was defeated the professor asked if the Doctor to keep K9 and look after him.
K-9 was created by Professor Marius in the year 5000. The Doctor and his companion Leela helped Professor Marius defeat an alien virus. After the virus was defeated the professor asked if the Doctor to keep K9 and look after him.
