Incorporation

The  was an ancient race of money-obsessed beings from the dawn of time that used their eternal strive for profit to enslave and overtake thousands of planets during their history. They were even able to suspend their consciousnesses after their extinction in a long plan to return from the dead by stealing artron energy.

Biology
The Incorporation resembled tall humanoids with dark grey skin and tall, thin heads. They were always seen wearing suits and had some form of psychic powers, being able to attack people's minds.

History
The Incorporation thrived around the start of the universe and had been dead for billions of years by the end of the Last Great Time War and seen as myths. Their goal was to monetise the universe through any means necessary, making them viewed as incredibly dangerous by the Ninth Doctor. They were eventually buried on Occasus in giant quantum state gold pyramids which were used as a vessel to bring them back to life.

When the Ninth Doctor visited Occasus, he was petrified upon visiting the Incorporation's tombs and his consciousness learnt of their plan to return from the dead by stealing his artron energy. After being returned to his body 89 years later, he worked with Fred to prevent their revival, ending when Fred completed their revival circuit, granting herself life and preventing the return of the Incorporation. (AUDIO: Planet of the End)