The Cyber Planner is the occasional leader of the Cybermen and recurring villain in Doctor Who. Like the Cybermen his weakness is gold.
The Wheel in Space
In his first appearance the Cyber Planner directed the Cybermen's attack on Space Station W3.
The InvasionTobias Vaughn had the Cyber Planner installed in his office. He channeled communications between him and the Cybermen during their invasion.
Nightmare in Silver
With the Cybermen in the Cyber tombs the Cyber Planner (using the name Mr. Clever) needed a body to control. Children were the ideal being as they had new fresh minds. However since the children stopped coming to Hedwick's World of Wonders where he was hiding he had no one to control. However the Eleventh Doctor and Clara brought Artie and Angie there with them so he had a Cyberman kidnap them. Mr. Clever partially upgraded them however he decided to possess the Doctor seeing him as superior as he was a Time Lord. Through a swarm of Cybermites he took over nearly have of his brain with the Doctor in control of most the other half leaving a little bit left neutral. They decided to have a chess game to determine who would control the whole brain. when the Doctor took a turn he was in control and when Mr. Clever took a turn he was in control. In the end Mr. Clever was almost able to win however The Doctor used a hand pulse to destroy him, giving him full control of his body back.