Slave of the Hond

An entity from outside time and space was unleashed by the Archivians. It agreed to transport the people of Islos and the contents of the Archive to safety in return for the Daleks. The Chief Archivian let it through a portal as the Daleks were entering the Archive. (WC: The Archive of Islos)

It forced the Daleks to retreat from Islos and would followed them back to Skaro. It began attacking the City, forcing the Daleks to evacuate the planet after finding their weapons were ineffective.

The Entity followed the Prime Strategist as he sought reinforcements from the Sentinel of the Fifth Galaxy and used its abilities from existing outside to time to take over the Sentinel prior to the Strategist’s arrival. The Strategist dismissed the Sentinel’s odd behaviour, such as referring to him as the Emperor, as defective programming and allowed it to awaken the dormant army and update the battle computer. The Entity took over the army, reprogramming the Daleks to recognise the Strategist as the Emperor. Through the Sentinel it revealed to the Strategist that, whilst it was seeking to eliminate the Daleks, it would settle for changing the leader. The Strategist refused and accelerated the self-destruct of the facility, destroying some of the army and a part of the Entity with them. Some of the Entity’s army escaped and purused the Strategist, engaging Dalek forces under the command of the Executioner. (WC: The Sentinel of the Fifth Galaxy)

Knowing that it follows the Daleks, the Emperor of the Restoration led the Entity to Mechanus. (WC: Planet of the Mechanoids)