Fourth Doctor recruited by the White Guardian to retrieve six Key to Time segments. He uses a locator to track a disguised segment on Ribos, gets arrested alongside Garron, escapes to the catacombs with K-9, disguises himself as a guard, swaps an explosive for the jethrik segment, and successfully transforms it in the TARDIS.
Officially paired by the White Guardian to complete the quest.
Fellow prisoners who unite to survive and defeat the Graff.
Local outcast whose knowledge of the underground aids the heroes.
Direct antagonists whose final confrontation ends in the Graff's destruction.
Indirect cooperation through intercepted communication benefits the main group.
Explore the full interactive character relationship map of Doctor Who: The Ribos Operation