Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
|Place of origin:||Earth|
|First seen in:||The Invisible Enemy|
|Other appearances:||PROSE: Tautology, PROSE: One Man and His Dog|
|Main actor:||Frederick Jaeger|
While off Earth Marius had a dog, Kelso. He could not to take Kelso to his new workplace at the laboratory of the Bi-Al Foundation. Marius left Kelso with Grace and constructed K9 to accompany and assist him in his work. (PROSE: One Man and His Dog)
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. (TV: The Invisible Enemy)