Skagra

Doctor Skagra was a geneticist, astro-engineer, cyberneticist, neurostructuralist, and moral theologian from the planet Dronid.

At some point, Skagra departed Dronid and set up Think Tank, a space station dedicated to the goal of creating a sphere capable of draining minds and adding the contents to its database. This was another component in his plan for the Universal Mind.

Following the creation of the Sphere, he set out to search for Shada and Salyavin. In 1979, Skagra travelled to Earth to find Salyavin. While there he obtained a copy of the mind of Professor Chronotis, in actuality Salyavin living incognito. Skagra also took the book known as The Worshipful and Ancient Law of Gallifrey, the key to Shada.

Skagra succeeded in finding Shada, but found that Salyavin had escaped long ago (and taken on a new guise as Chronotis). The Doctor and Romana foiled Skagra's plans for the Universal Mind, and Skagra was left trapped within his Ship following the Doctor's alterations to it.

_{Biography from the TARDIS Data Core article, licensed under CC-BY-SA}