Straxus Straxus was a Time Lord who acted as an agent for the Celestial Intervention Agency and High Council at different times . He was notable for interfering in his own future ( at his superiors ' behest ) on two separate occasions . Straxus once worked for the Celestial Intervention Agency . Unbeknownst to the High Council , he was instructed to gather from the Vess weapons that would allow the Time Lords to defend themselves and defeat races that posed a threat to Gallifrey . He was discovered by , who blackmailed him and the CIA by threatening to inform the High Council . In exchange for his silence , Straxus let him buy a conceptual bomb from the Vess . The Master used the device to attack the Doctor ' s timeline , using the bomb to erase the Doctor ' s TARDIS and consequently everything he had accomplished . Recognising that the loss of the Doctor from history was causing too much damage , Straxus then captured the Sixth Doctor to ask for his help in defeating the Master . Eventually , he regretted his own actions and claimed he meant to report to the High Council . His TARDIS was destroyed by the Sixth Doctor by forcing and expanding its dimensional stabilisation field , in order to let the Doctor ' s other incarnations land in the pocket dimension of the Vess at the same time . Although the first three Doctors were only able to partially materialise , this was enough for the other Doctors to work out what the Master had done and undo his attack , essentially erasing the whole crisis from existence . ( AUDIO : " The Light at the End " ) Straxus was involved in a scandal with Ludwig Cooray in Ceylon , 1893 . ( PROSE : " A Gallery of Pigeons " ) The first time Straxus interfered in his own future timeline was during the War , when his future self became stranded on Victorian Earth . The future Straxus had been sent on a mission by his superiors , accompanied by a Cwej , but his time ring failed and he became stranded . Straxus needed to gain his people ' s attention , and thought the best way to do so was to interfere in history in an obvious way . Rather than assassinating a public figure or starting a war , which might have significantly damaged causality , he collected historical artefacts that should have been discovered in the future . He also attempted to draw another time ring to his time , and managed to attract Bernice Summerfield , but her time ring was set only to work for people matching a specific genetic pattern and he couldn ' t use it . Straxus wasn ' t the only one trying to get the attention of a superior through ritual : his Cwej Septimus was committing murders themed around the number seven , hoping for notice from a " Pale God " . The Cwej ' s scheme resulted in Straxus ' s regeneration , but his interference had gotten his people ' s attention after all : specifically his previous self . The younger Straxus extracted , imprisoned , and interrogated his aborted future counterpart . ( AUDIO : " The Adventure of the Diogenes Damsel " ) In a different body , Straxus was sent by the High Council to the Doctor ' s TARDIS . He ordered the Eighth Doctor to Lonsis in 2006 to retrieve Lucie Miller from a temporal blackspot . The Doctor agreed on condition that Straxus fix his TARDIS . Straxus agreed and gave the Doctor a time ring for his mission . On the Doctor ' s return from his mission , Straxus told the Doctor why Lucie was originally taken out of her own time and sent to the Doctor . Straxus then helped the Doctor defeat the Cybermen on Lonsis before returning to Gallifrey . ( AUDIO : " Human Resources " ) Straxus was later sent by the Time Lord s to take the Doctor back to Gallifrey , where he was to be quarantined with the rest of the Time Lords in order to prevent the resurrection of Morbius . ( AUDIO : " Sisters of the Flame " ) Straxus failed to find the Doctor in time and instead was captured by Cristophe Zarodnix and was forced to surrender his DNA in order to resurrect Morbius . Straxus was imprisoned for ten years while Morbius fed on Straxus ' life energy whenever he became weak . The Doctor and Lucie came for Straxus and the Doctor sacrificed his life to save the universe from Morbius . Straxus ' life energy was restored after the Time Lords corrected history . Straxus was taken back to Karn , where he offered to take Lucie home to Earth . ( AUDIO : " The Vengeance of Morbius " ) Yet another Straxus became Coordinator of the CIA . ( AUDIO : " The Death of Hope " ) This was when he next interfered in his own future . His next incarnation became fed up with the morally questionable actions of himself and his people , and allied himself with the Dalek Time Controller . The Dalek Time Controller helped him rewrite his biodata to remove his Time Lord heritage , so that when they retroactively destroyed the Time Lords the new Straxus — now calling himself Kotris — would survive . Kotris knew that as Straxus he had attempted to avoid regenerating , and sent a temporal drone to prevent Straxus killing himself . Kotris and the Time Controller planned to incubate " retro - genitor particle s " in a human named Molly O ' Sullivan . They sent Daleks after her and the Doctor , forcing them to spend time together and allowing the retro - genitor particles to latch onto the Doctor ' s Gallifreyan DNA . The particles were then intended to follow that DNA back through history , undoing not just the Doctor ' s life , but all of Gallifrey ' s past . The younger Coordinator Straxus was instructed by the Lord President of Gallifrey to send the Doctor to France during World War I . Straxus later saved the Doctor and his new companion Molly from a group of Daleks . His TARDIS was attacked by the Daleks and he escaped back to Gallifrey . Straxus attempted to kill himself by throwing himself off a mountain on Srangor , where regeneration was impossible , but was stopped by his future self ' s temporal drone . Straxus modified the retro - genitor particles implanted in Molly to target the Daleks instead of the Time Lords , but in a confrontation with Kotris and the Dalek Time Controller , the Time Controller killed him . This meant he could never become Kotris , and the scheme was entirely undone . ( AUDIO : " The Great War " , " Fugitives " , " Tangled Web " , " X and the Daleks " , " The Death of Hope " )