Ravus Oldeman was a junior technician.
He was part of a six-member research project on Akoshemon's only moon to create a human-Akoshemon hybrid capable of autonomous self-stasis. However, the resulting creation, the Bloodhunter, killed the other five researchers. Oldeman managed to survive by putting himself in suspended animation. But because he was in a hurry, he aged during the hibernation process.
Over 150 years later, in 2382, the laboratory was found by the Fifth Doctor and a group of miners masquerading as archaeologists. Oldeman was revived, but was eventually killed by the Bloodhunter. The technician's blood was used by the Dark to reconstitute itself. (PROSE: Fear of the Dark)