I am a human Dalek. I am your future.
~ Dalek Sec after he is transformed into the Human/Dalek hybrid.

Dalek Sec is an enemy that appears in Doctor Who. He was a Dalek and the leader of the Cult of Skaro. He first appeared as the main antagonist the episodes "Army of Ghosts" and "Doomsday", and later returned along with the rest of the Cult of Skaro as the main antagonist in the episode "Daleks in Manhattan" and an anti-villain in "Evolution of the Daleks".


He is an all black Dalek. His true Dalek Form is green and has longer tentacles than the others.


As leader of the Cult of Skaro, Dalek Sec was more intelligent and creative than most Daleks; indeed the doctor throught that he was the cleverest Dalek to have ever existed. As a Human Dalek his personality changed, he became remorseful and even accepted the Doctor's help, as he wanted to make sure the Daleks would survive without killing any more people.


The Cult of Skaro

Dalek Sec and the Cult of Skaro

Sec and the Cult of Skaro escaped the Great Time War against the Time lords by going into the Void in a special ship and reappearing on Earth. Through a crack in space made by the void ship, also the Cybermen were able to leave their parallel universe and fight the Cult of Skaro. In the end, the Tenth Doctor was able to have the armies of the Daleks and the Cybermen sucked back into the void while the Cult of Skaro escaped to 1920s New York.

Dalek Sec wanted to evolve the Daleks into a more adaptive species. As a part of his plan, Sec became a "Human Dalek" by taking the body of Mr Diagoras to link his DNA with humans. Sec developed emotions and joined the Doctor, however Dalek Caan became the new cult leader and captured Dalek Sec. After defending the Doctor, Dalek Sec was killed by the remaining members of the Cult of Skaro.


This is not war, this is pest control!
~ Dalek Sec to the Cybermen
We would destroy the Cybermen with ONE Dalek! You are superior in only one respect. [...] You are better at dying!
~ Dalek Sec
No! I beg you! Don't!
~ Sec's last words