Dalek Caan Dalek Caan was one of four Dalek s in the Cult of Skaro . Like the other members of the Cult , he was tasked to think creatively , like the Daleks ' enemies , to find new ways of defeating them . ( TV : " Doomsday " ) After two defeats by the Tenth Doctor , Caan was thought to be the only Dalek remaining in existence . To create a new Dalek empire , he accomplished what was thought to be impossible : he breached the time - lock ed situation of the Last Great Time War and extracted Davros , the creator of the Daleks . This action cost Caan his mind , but allowed him to see into the future and manipulate timelines . ( TV : " The Stolen Earth " , " Journey ' s End " ) Caan was presumably killed , along with virtually the entire New Dalek Empire which he founded , when he betrayed his own kind . ( TV : " Journey ' s End " ) Biography . Origins . Dalek Caan was the Attack Squad Leader of the Thirteenth Assault Group and was chosen to be part of the Cult of Skaro . The Cult was a secret order established by the Dalek Emperor prior to the Last Great Time War . ( PROSE : " Birth of a Legend " ) Its four members " dared to have names " . According to the Tenth Doctor , who initially believed them to be a legend , " Their job was to imagine , think as the enemy thinks . . . all to find new ways of killing , " none of which was denied by the Cult . ( TV : " Doomsday " ) Last Great Time War . During the Time War , the Cult , including Caan , avoided the front lines of battle and instead stole the Genesis Ark , a prison ship similar to a TARDIS that was constructed by the Time Lords to imprison millions of Daleks . The Cult took the Genesis Ark and fled the war by escaping into the Void by using a unique and extremely advanced Void Ship . Their plan was to free their imprisoned brethren from the Ark and re - establish the Dalek Empire on Earth . ( TV : " Doomsday " ) Battle of Canary Wharf . Dalek Caan and the other three Cult members emerged from the Void with the Genesis Ark in London in 2007 . There , they sought to find a time traveller whom they could trick or force to open the Genesis Ark for them . The Daleks scanned Dr Singh ' s brain and learned another species , the Cybermen , had invaded Earth . The Cyber - Leader declared war while the Cult declared " pest control " . Dalek Caan took part in the Battle of Canary Wharf , in which the Genesis Ark released a very large number of Daleks onto Earth . Because they had been through the void , they were covered in void stuff . The Tenth Doctor opened the rift the Cybermen had come through and reversed it , sucking in all beings covered in " Void stuff " . As all the newly freed Daleks were sucked into the Void , Dalek Caan and the three other Cult members activated an emergency temporal shift and escaped . ( TV : " Army of Ghosts " / " Doomsday " ) The Final Experiment . The Cult ended up in New York City in 1930 . They recruited Mr Diagoras , the head of construction for the Empire State Building . He kidnapped people for their research and for the " Final Experiment " . Dalek Caan served as the Cult ' s liaison with Diagoras . Caan took him to their leader , Dalek Sec , who merged with Diagoras in his casing to become the first Dalek - human hybrid . ( TV : " Daleks in Manhattan " ) After Dalek Sec became a Dalek - human , he decided that their creator , Davros , was wrong about removing emotions . He even came to understand that the recent killings of humans at Hooverville were wrong . However , Dalek Caan and the other members decided the plan Sec had for the new Daleks was unacceptable ; it would change everything that made a Dalek a Dalek and they would no longer be supreme . Daleks Caan , Jast and Thay mutinied , imprisoned Sec , and poured a different gene solution into the Dalek - humans to the one Sec had wanted . The resulting force of hybrid " Dalek - humans " would have turned out exactly like Daleks , against Dalek Sec ' s plans , had the Doctor not intervened . Dalek Caan made himself Controller and connected with the Dalek - human army . When Dalek Thay and Dalek Jast ordered the new Daleks to destroy the Doctor , the hybrids questioned orders . The Doctor explained that he got in the way of the gamma strike which had brought them to life . His DNA had become mixed with theirs , giving them a dose of Time Lord freedom . A battle broke out between two Cult members and the Dalek - humans . Jast and Thay were destroyed . Only Caan remained ; realising that the hybrids had been tampered with , he exterminated the entire race of " Dalek - humans " . Caan was the last member of the Cult and – according to the Doctor — the last of the " entire " Dalek species . The Doctor confronted him and offered Caan help and compassion because he didn ' t want genocide . Unwilling to accept the help of the Doctor , Caan activated an emergency temporal shift and escaped . ( TV : " Evolution of the Daleks " ) Into , and out of , the Time War . The emergency temporal shift took Dalek Caan to the first year of the Time War , making him the first being to have breached the time lock . He saved Davros from death in the jaws of the Nightmare Child , but at a great cost : Dalek Caan saw the whole of time and space , gaining the ability to see both the past , present and future with great clarity . He and Davros then created the New Dalek Empire using cells from Davros ' own body . ( TV : " The Stolen Earth " ) Witnessing the whole of time and space drove Caan mad and he realised just how destructive his race was . He secretly began to plan for the Daleks to meet their end at the hands of the Doctor . He told no one about his secret plan to undermine the new empire he helped create by assisting the Doctor . ( TV : " Journey ' s End " ) In the presence of Davros and the new Daleks , he almost constantly chuckled from inside his wrecked battle armour , and presented precognitive riddles in an almost sing - song voice . ( TV : " The Stolen Earth " ) Meanwhile , the New Dalek Empire forged forward with a plot to steal planets , align them inside the Medusa Cascade , and use them to power a reality bomb in conjunction with the " Crucible " energy core . ( TV : " Journey ' s End " ) The Supreme Dalek of the New Empire regarded Dalek Caan as an insane " abomination " , but Davros defended him and demanded respect for Caan . Neither knew that Caan was working against them all . ( TV : " The Stolen Earth " ) The Prophecy . Following the movement of Earth to the Medusa Cascade , Caan prophesied of the coming of a " three - fold man " , of " the Doctor ' s soul " being revealed , that the " Children of Time would gather " and " one would die " . The " three - fold man " referred to the Doctor , the " Meta - Crisis Doctor " , and the " Doctor - Donna " . The last two were created when Donna Noble touched the Doctor ' s spare hand , which had been used as a repository for the Doctor ' s regeneration energy . This created the Meta - Crisis Doctor . Donna subsequently received the mind of a Time Lord . The " Children of Time " were Rose Tyler , Jackie Tyler , Mickey Smith , Sarah Jane Smith , Captain Jack Harkness and Martha Jones , who had each travelled with the Doctor . The Doctor ' s soul was revealed as a man who refused to use weapons but moulded his companions into them ; Jack , Sarah Jane , Mickey , Jackie and Martha each threatened destruction to stop the Daleks . Their threats were all foiled when the Supreme Dalek had them teleported to the Vault . The Meta - Crisis Doctor and Donna arrived to try and stop Davros , who incapacitated them both . However , Donna ' s Time Lord mind , having lain dormant , was " jump - started " by Davros ' attack . Using her human ingenuity coupled with her Time Lord knowledge , she : deactivated the reality bomb by closing all of the Z - Neutrino energy relay loops by using an internalised synchronous back - feed reversal loop ; disabled Davros with a bio - electric dampening field with a retrogressive arc inversion and his Daleks with a trip stitch circuit - breaker in the psycho - kinetic threshold manipulator ; and locked the Daleks ' weaponry in a self - replicating energy blindfold matrix through macrotransmission of a K - filter wavelength . Davros demanded to know why Dalek Caan had not foreseen their defeat . Caan replied with mad giggling . The Doctor realised that Caan " had " foreseen these events , and had even manipulated the timelines , binding Donna and the Doctor together to bring events to this conclusion . Caan said he " only helped " . When Davros accused Caan of betraying the Daleks , Caan replied that rather , he had witnessed the evil of his kind throughout all of time and space , and how many innocent lives were massacred by his race . Even as Davros rebuilt the Daleks , Caan privately had decreed " no more " . Dalek Caan pressured the Meta - Crisis Doctor to destroy the Daleks , which he did by blasting back the Dalekanium power feed s . Caan remained aboard the exploding " Crucible " with Davros , reminding the Doctor before he left that " one will still die . " Apparently , the companion who " died " was DoctorDonna , whose memories of her travels with the Doctor had to be erased to save her from burning out from the Time Lord knowledge that she carried . Should Donna ever remember her travels , the knowledge would destroy her . The Doctor told her family that the Donna she had become was dead . ( TV : " Journey ' s End " ) Personality . Dalek Caan had a mind of his own and thought for himself . That was part of the Cult of Skaro mandate : to imagine and think as their enemies thought . Unlike most Daleks , who always obeyed their superiors , Caan was independent and made his own decisions and disobeyed higher - ranking Daleks . However , Caan still believed in the notion of Dalek purity and supremacy , perhaps more than the other members of the Cult of Skaro , which may have influenced his betrayal of his superior , who had both disagreed with the idea and forsook his own purity . He was the first to question the Dalek Sec - hybrid and convinced Dalek Jast and Dalek Thay to overthrow him . ( TV : " Evolution of the Daleks " ) After flying into the Time War , Dalek Caan lost his sanity and giggled madly . He foresaw the future with perfect accuracy because he had seen the whole of time and space . Davros noted that even the Supreme Dalek didn ' t dare to contradict Caan ' s prophecies . ( TV : " The Stolen Earth " ) Though Caan had never lied about the future he did not always reveal the whole truth . Though he had foreseen that the Doctor and his companions would defeat the Daleks , he made no effort to stop them . Caan made prophecies in an almost sing - song voice . Caan revealed that not only did he foresee certain things , but he manipulated the timelines to help bring them to pass by bringing the Doctor and Donna Noble together . He also pushed the Meta - Crisis Tenth Doctor to destroy the Daleks and thus fulfil his prophecy of their destruction . Despite his madness , Dalek Caan was cunning enough to fool Davros throughout the War in the Medusa Cascade and betray him . In helping the Doctor defeat the Daleks , he truly thought like his enemy did : thinking like the Doctor on how to defeat the Daleks and even how to help the Doctor do it . Caan was also somewhat manipulative and the Doctor noted that he had been manipulating the timelines ever since he had rescued Davros from the Time War . However , Caan was also quite humble , at least after his change of heart , telling the Doctor that the defeat of the Daleks was inevitable and that he had only helped rather than been directly responsible for it . ( TV : " Journey ' s End " ) Despite , or perhaps , from a Dalek ' s point of view , because of his insanity , Dalek Caan felt regret for everything the Daleks had done and decided to help the Doctor defeat them . Most Daleks were only capable of feeling hatred or fear , but Caan was an exception and felt remorse for the slaughter the Daleks had committed throughout time and space . After he returned to the Time War , Caan realised that the Daleks and their creator were evil monsters . Disgusted with them and himself for being one of them , Caan chose to put an end to the Daleks and made no effort to save himself when the " Crucible " exploded . Instead he warned the Doctor one of his companions would die . ( TV : " Journey ' s End " ) Other information . Dalek Caan , as with all Daleks that originated from the Last Great Time War , possessed markings below his eyepiece to identify him . Caan was the fourth one to speak out of the cult . ( TV : " Doomsday " ) Caan breached the time lock being the only being to do so . It cost him his sanity , leading the Supreme Dalek to call him an abomination . ( TV : " The Stolen Earth " ) Caan was the last to die out of the cult . ( TV : " Journey ' s End " ) Caan ' s voice was originally the deepest of the Cult of Skaro . However , after the Cult revolted against Dalek Sec , Caan ' s voice changed to the same pitch as Sec ' s . Caan took over as leader of the cult following this . ( TV : " Evolution of the Daleks " ) Given the Doctor and Caan ' s comments , like Eve and her son Adam , Caan gained the ability to manipulate timelines as well as precognition from breaking through the time lock . While he admitted to using this to bring Donna Noble and the Tenth Doctor together , he said he only helped , that the events would ' ve happened even without him . ( TV : " Journey ' s End " )