Dalek Emperor

The Dalek Emperor was the name given to the self-proclaimed leader of the Daleks. There have been many Emperors over time, some of which haven't even been Daleks, but all of them have been completely insane...

The Original Dalek Emperor
The Original Dalek Emperor ruled the Dalek race after their previous leader, the 'Supreme Dalek', was killed. He ruled for many years but died at the start of the Dalek Civil War, because none of his Daleks would obey him.

He would have been good pals with Jorgey if they had met, since the Dalek Emperor treats his subjects harshly and is completely insane.

The 'Imposter' Dalek Emperor
The Next Dalek Emperor took control of the Imperial Dalek faction and turned out to be Davros, the original creator of the Daleks. Davros had been planning to create a new race of Daleks for centuries, a race that would obey him without question. He modified his Imperial Daleks to be part cybernetic, which was seen as blastphemy by the Renegade Daleks. He was ousted by the Doctor to restore order amongst the Daleks.

The New Dalek Emperor
The New Dalek Emperor took control during the Time War, a war between the Daleks and the Doctor's race, the 'Time Lords'. He went insane and called himself the 'God of all Daleks'. He escaped the Time War and began creting new Daleks out of Humans, but was stopped by the Doctor and disintergrated as his flagship burnt. Since then, there has been no more Emperors, but there has been another line of Supreme Daleks and even a Dalek Prime Minister.