Dorium Maldovar

Dorium Maldovar was a black marketeer in the 52nd century.

Biography
In 5145, After hearing that she was in search of time travel, Dorium met with River Song in the Maldovarium bar to offer her a Vortex manipulator that was "fresh off the wrist of a handsome Time Agent". As payment, Song offered him a Callisto Pulse which could disarm Micro-explosives from up to twenty feet. When he enquired as to what kind of micro-explosives the pulse could disarm, she responded by saying the kind that she had just put in his wine. He was forced to give her the Vortex Manipulator. (DW: The Pandorica Opens)

Dorium sold a Judoon's brain that contained a security protocol to a trio of Headless Monks, receiving a bag of sentient money. As his customers left, he questioned their motives for kidnapping "the child" and told them not to provoke the the Doctor's anger and rage. (WC: Prequel (A Good Man Goes to War))

Dorium was one of many people who owed the Doctor a debt and was summoned by him to help rescue Amy and her baby at Demons Run. He did not serve in a combat role, but went into the station's computer and discovered that Melody Pond had 'Human plus Time Lord' DNA.

Dorium made a fatal mistake when he and the others were surrounded by the Headless Monks. He believed they were his friends and would not harm him. He approached them with open arms, but they swiftly decapitated Dorium and added him to their ranks. His headless body was subsequently killed by the Doctor's remaining allies in their defence against the monks. (DW: A Good Man Goes to War)

The Doctor was told by the alien Gantok that Dorium had information about the the Silence, to which the Doctor pointyed out that Dorium was dead. The two then went to the Cave of Skulls (where all of the heads of those who the monks have beheaded are stored). Gantok explained that while most heads are left to rot and die (beooming skulls), the very rich can have their heads stored in a box, fully conscious and "alive". In one such box they found the decapitated head of Dorium. Dorium (after explaining that he kept himself entertained as he had a media chip installed in his head, so could access the internet via wi-fi) told the Doctor that on the fields of Trenzalore, at the fall of the Eleventh, a question would be asked, a question that must never be answered. After this, the Doctor took him aboard the TARDIS. Dorium tried to explain to the Doctor that he must die at some point, but the Doctor argued that as he has a time machine, he could just keep running. However, a phone call to a nursing home told him that his old friend, Brigadier Lethbridge-Stewart, had passed away in his sleep. After discovering this, the Doctor decided sadly to go to his death.

Later, a Headless Monk was seen walking with Dorium's head back to the Cave of Skulls. The Headless Monk turned out to actually be the Doctor, who had escaped his death somehow, despite the fact that it had apparently still happened; Dorium asked how he had done it. The Doctor explained that the Doctor that was "killed" was in fact a Teselecta robot, and that he would now have to keep a low profile so the Universe would forget him and think he was dead; he had got "too big". As the Doctor left, Dorium warned him that Trenzalore and the Fall of the Eleventh were still waiting for him, and called after the Doctor the final question; "Doctor Who?" (DW: The Wedding of River Song)