Skagra

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

Early life
Around the age of five, Skagra came to the realization that God did not exist, and that this meant there was a "situation vacant", and spent most of his life working towards a plan that would make himself the omniscient master of the universe. At a young age, he had an epiphany how to reverse decay whilst in the middle of a romantic moment, and decided to shun himself away from romance to avoid "distractions".

Unlike most inhabitants of Drornid, Skagra was deeply interested in his planet's history. He excavated the statue of Thorac and learned about the Time Lords, including the story of Salyavin and his ability to place his own mind in the minds of others. Skagra became obsessed with the building what he called the Universal Mind: placing his own mind into all matter in the universe. To achieve this end, he needed to release Salyavin from Shada, and to do that, he needed The Worshipful and Ancient Law of Gallifrey. Skagra drugged, kidnapped and tortured a member of the Sisterhood of Karn to force her to reveal its location. Once she revealed that the book was at Cambridge on Earth, he jettisoning her into space, as she was of no further use to him.

He also created the Ship, a sentient and top-of-the-line spaceship, partially based on stolen Gallifreyan designs. He designed its artificial personality to worship him unconditionally, having determined that this would make for the most obedient servant, though he later somewhat regretted this decision, as the Ship's constant and eager praise got on his nerves. (PROSE: Shada)

The quest for Shada
At some point, Skagra departed Drornid 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. He stole The Worshipful and Ancient Law of Gallifrey book from the Doctor, in either his eighth (WC: Shada) or fourth incarnation, (PROSE: Shada) and also obtained a copy of the mind of Professor Chronotis.

Using the book, Skagra succeeded in finding Shada, but found that Salyavin had escaped long ago and taken on the guise of Chronotis. The Doctor and Romana II foiled Skagra's plans for the Universal Mind, and Skagra was left trapped within his rebellious ship following the Doctor's alterations to it. (WC: Shada) Hoping to rid him of his character flaws, the Ship forced Skagra to watch video reports about the Doctor's life, in chronological order — a process that was sheer torture to Skagra. (PROSE: Shada)

Personality
Skagra claimed that he was not a power-hungry maniac, but his actions showed that he was either lying or deluding himself, because he wanted to take over the universe — or rather, be the universe. (WC: Shada) He only allowed himself to smile twice a day (PROSE: Shada) and usually showed very little emotion. Only the Doctor was able to cause him genuine anger (WC: Shada) and Skagra grew to hate the Time Lord immensely. (PROSE: Shada) He was callous, forming no sentimental attachment to his loyal ship and was happy to allow her to be blown apart once he found a better mode of transport. (WC: Shada)