Frederick Marius

Professor Frederick Marius (PROSE: One Man and His Dog) was a scientist who worked at the Bi-Al Foundation in the year 5000 as a specialist in extraterrestrial pathological endomorphisms. He was the creator and first master of K9 Mark I.
== Biography ==
According to one source, Marius was given a gift of a broken-down computer from the 20th century by his niece Gloria's fiancé Frank. Marius was extremely surprised by how technologically advanced the machine was, especially since it had come from the 20th century. The machine was actually an older model of K9 once owned by Sarah Jane Smith. Marius was forced to destroy the machine due to a lack of time, but build the circuitry of K9 Mark I based heavily on the machine. (PROSE: Tautology)
Marius had a dog, although sources dispute the name of the animal. By some accounts his name was Toby, (PROSE: Tautology) and by others he was known as Kelso. (PROSE: One Man and His Dog) He could not to take the dog to his new workplace at the laboratory of the Bi-Al Foundation. (PROSE: Tautology, PROSE: One Man and His Dog) According to one source, Marius left Kelso with Grace and constructed K9 to accompany and assist him in his work. (PROSE: One Man and His Dog) According to the other source, Marius would keep Toby's nametag and would place it around K9's neck. (PROSE: Tautology)
He helped the Fourth Doctor defeat the Swarm, although he himself was briefly infected by it and so freed the Nucleus and made it grow in size. Afterwards, Marius gave K9 to the Doctor to take with him on his journeys. Feeling teary about parting company from his trusted friend, he hoped that he was TARDIS trained. (TV: The Invisible Enemy)
== References ==
Leela once remarked that Professor Marius would not be happy with the damage that K9 suffered. (TV: Image of the Fendahl)
Before K9 Mark II shut down on Purgatory 12, he thanked Professor Marius. (AUDIO: Purgatory 12)
== Behind the scenes ==
* Marius' first name isn't given in any media outside of PROSE: Tautology, in which he is named Frederick - presumably after the actor who portrayed him, Frederick Jaeger.
* An unnamed Professor with obvious similarities to Professor Marius appeared in From Wildthyme with Love.
Category:Human scientists
Category:51st century individuals
Category:Human professors
Category:Sarah Jane Smith's relatives