River Song

Melody "Mels" Pond, later River Song, was a "child of the TARDIS" and the Doctor's wife. She was human with Time Lord DNA, conceived by her parents, Amy Pond and Rory Williams, onboard the Eleventh Doctor's TARDIS as it travelled through the Time Vortex. (TV: A Good Man Goes to War) This gave her the potential for great strength, regeneration, the ability to pilot the TARDIS and understand complex principles of time and space. (TV: The Time of Angels, Day of the Moon, A Good Man Goes to War, The Wedding of River Song) She loved the Doctor with her whole heart, and indicated that she shared a wonderful and long-lasting relationship with him. River was one of the very few people who knew the Doctor's true name. (TV: Forest of the Dead)

Melody was stolen from her parents as an infant by Madame Kovarian to become a weapon of the Silence in their war against the Doctor. After her second regeneration, she killed the Eleventh Doctor, but then broke her mental conditioning to give her remaining regenerations to revive his corpse. (TV: Let's Kill Hitler)

The Doctor and her parents left her to make her own way in the universe. With no connection to her family or the Silence, River became an archaeologist, ostensibly to track the Doctor through time. She crossed the Doctor's path on several occasions, generally with the result that she was meeting him at progressively earlier points in his own time stream. Hoping to avoid temporal paradoxes, the Doctor gave her a diary to keep track of their meetings and to prevent her from revealing "spoilers" to him about his own future.

Again forced by the Silence, she made a second attempt on the Eleventh Doctor's life. Though actually unsuccessful, she was convicted of his murder and spent many years in Stormcage Containment Facility for it — apparently to convince the universe that the Doctor actually was dead. This confinement was made more bearable by escaping frequently to go out on dates with the Doctor. (TV: First Night, Last Night) She was eventually pardoned due to there being no evidence that the Doctor ever existed and became a Professor of Archeology. (TV: The Angels Take Manhattan)

She died saving the Tenth Doctor, Donna Noble, Strackman Lux, and the 4,022 people saved in the computer system in the Library. The Tenth Doctor saved her consciousness digitally to the Library's computer system CAL, granting her a form of immortality. (TV: Forest of the Dead)

Birth
Melody Pond was born on the asteroid of Demon's Run in the 52nd century to Amy Pond, who had been abducted from the 21st century, and Rory Williams. Within a month, she was replaced with a ganger and taken by Madame Kovarian to the 20th century to be raised to kill the Doctor. (TV: Day of the Moon, The Almost People, A Good Man Goes to War) She was chosen for this task because she had traces of Time Lord DNA from her conception on the TARDIS. This gave her the potential for great strength and regeneration, to pilot the TARDIS and understand complex principles of time and space. (TV: The Time of Angels, Day of the Moon, A Good Man Goes to War, The Wedding of River Song)

A little girl lost
Melody was trained by the Silence to kill the Doctor; she later claimed this part of her life was "a bit of a jumble" to remember due to their memory-erasing powers. (TV: Let's Kill Hitler) As a little girl, she ended up in an orphanage in 1969 Florida, under heavy security. (TV: Day of the Moon) Melody was forced into an Apollo astronaut suit that the Silence upgraded with alien technology. (TV: The Impossible Astronaut / Day of the Moon) Unaware that it defaulted to the highest authority it could find, Melody used the suit to hack into the phone lines and call President Nixon several times, asking for help; Melody feared that the "spaceman" (The astronaut suit) was going to eat her. (WC: Prequel (The Impossible Astronaut))

This led to her first physical meeting with the Eleventh Doctor. Her mother shot at her in fear of the Doctor's impending death; the visor was damaged, but Melody was unharmed. (TV: The Impossible Astronaut / Day of the Moon)

She returned to Graystark three months later, to discover Amy in her room. Melody begged her for help, but Amy was confused because of a picture of herself with Melody as an infant. With the arrival of Silents, Melody forced her way out of the suit and fled; she lingered long enough to see the Doctor once more. Whilst she was dying of disease in 1970 New York City, she "fixed" her illness by regenerating. (TV: Day of the Moon)

Mels
After her regeneration finished, Melody discovered that she had become a toddler. Somehow, by the 1990s, she was a child in Leadworth, going by Mels for short. She was a close childhood friend of her parents, who had no idea she was their daughter. She was often in trouble, with outbursts of reckless criminal behaviour into her adolescence. She obsessed over Amelia's "Raggedy Doctor", dreamt of marrying him and claimed in school that historical disasters were his fault because he did not intervene; all of these negative views of the Doctor came from her conditioning by the Silence. All the while, she knew Amy and Rory were her parents and that she intended to kill the Doctor. She eventually helped Amy see that Rory loved her after she spent an entire decade thinking he was gay. (TV: Let's Kill Hitler)

Becoming River Song
When the TARDIS landed in a local cornfield in 2011, Mels forced her way aboard at gunpoint and crashed it in Adolf Hitler's office in 1938, inadvertently saving Hitler from the Teselecta. When Hitler shot her, she stunned the Eleventh Doctor and her parents by regenerating into River Song. Acting on her conditioning, she killed the Doctor with poisoned lipstick. She cheerily called herself a psychopath and ran amok in Berlin. She showed empathy for the Doctor's devotion to her parents, jealousy of the "River Song" he kept mentioning and compassion for his struggle to save her from the Teselecta. She demanded to know who River was. Amy ordered the Teselecta to show her. It morphed into the form of her new incarnation. She asked her parents if the Doctor was "worth it". When they said yes, she sacrificed her remaining regenerations to restore him.

The Doctor took River to the "best hospital in the universe" to recover. Knowing of her future as his wife and on-and-off companion, he left a TARDIS-shaped diary as a gift, hoping to avoid "spoilers", foreknowledge that might wreck the universe. (TV: Let's Kill Hitler) After recuperating, River found the clothes her parents left for her; she believed Amy bought them as there were too many short skirts. (GAME: The Eternity Clock)

Hoping to find the Doctor once again, River entered the Luna University in 5123. When asked why she wished to study archaeology, River said she was "looking for a good man". This would lead to her knowing some of the Doctor's locations in the past. (TV: Let's Kill Hitler)

22 April 2011
The day River received her doctorate, Kovarian appeared with agents of the Church and the Silence. They seized her, forced her into a modified astronaut suit, took her to Utah on 22 April 2011 and submerged her in Lake Silencio to await the Doctor. (TV: Closing Time)

When the time came to kill him, River drained her weapon pack to defy a fixed point in time. Time shredded into a reality where all history happened at once. She initially refused to rectify her error, but after marrying the Doctor, she went through with his apparent murder to restore the timeline, knowing he was really safe inside the Teselecta. (TV: The Wedding of River Song)

Imprisonment
River was sentenced to twelve thousand consecutive life sentences in the Stormcage Containment Facility in the 52nd century for the Doctor's murder. (TV: The Time of Angels, The Pandorica Opens) She served the sentence to make the Silence believe him dead, but starting with her first night, escaped often to spend time with her husband, then returned to her cell. (TV: First Night) River escaped from Stormcage on her own using her Vortex manipulator after five years of imprisonment. During her adventure, she encountered several Sontarans who shot at and chased her halfway across the galaxy after she asked them if they were on a "hen night." She escaped into the TARDIS where the Doctor returned her to Stormcage via her vortex manipulator to prevent her from interacting with her past self and her future self. (TV: Last Night)

Return to the Battle of Demon's Run
On one birthday, the Doctor took her to the last Winter Frost Fair on the River Thames in 1814. Stevie Wonder performed, not knowing where and when he had truly been brought, before being restored to his proper time. Back at Stormcage, River met Rory in his Roman garb. She refused to come aid them at Demon's Run, saying she couldn't be there "until the very end".

Minutes after Kovarian had fled with her first incarnation at the end of the Battle of Demon's Run, River appeared and revealed her identity, first to the Doctor and then to her parents. (TV: A Good Man Goes to War, CON: When Time Froze)

Silence in America
On receiving an invitation from the Doctor, River escaped from Stormcage to meet Amy, Rory and him in Utah in America on 22 April 2011. The Doctor, inside a Teselecta double of himself, took them on a picnic where the Teselecta was shot by River's younger self. Amy, Rory and River went to a cafe to find a version of the Eleventh Doctor two hundred years younger than the one inside the Teselecta. (TV: The Impossible Astronaut, The Wedding of River Song)

River secretly revisited her childhood when she accompanied her parents, the Eleventh Doctor, and Canton Delaware to Florida on 8 April 1969 to find the little girl who kept ringing Richard Nixon, Adhering to the Doctor's rule against "spoilers" which could again collapse time, she feigned ignorance of her childhood self's identity. The only information she gave the Doctor about her old spacesuit was that which she could have reasonably determined by her inspection of it, and she offered Amy and Canton no forewarning about what they would find in her old orphanage. Any knowledge she may had retained about the Silence she kept to herself. (TV: The Impossible Astronaut)

River, Amy, Rory, Canton, and the Doctor split up to investigate the Silence over the next three months. By July, River was in New York City, the then-home of her 60-something year-old parents and 23-year-old adoptive brother. (TV: Day of the Moon; WC: P.S.) Much as she had relied upon the Doctor and his TARDIS being in the right place and time to rescue her from the Byzantium and the vacuum of space, (TV: The Time of Angels) she dove backwards out of the 50th floor of a building and into the TARDIS' swimming pool. She helped the Doctor defeat the Silence by using their brainwashing of humanity against them, while making sure she did not meet her first incarnation. River killed all of the Silence who were holding her mother hostage. At her request, the Doctor returned her to Stormcage, where she kissed him. He was shocked and she realised that from his perspective, it was their first kiss; from hers, it was probably their last. (TV: Day of the Moon)

The opening of the Pandorica
The TARDIS rerouted a phone call for the Doctor from Winston Churchill to River. She escaped to warn the Doctor of a prophecy of the TARDIS exploding. She blackmailed a Time Agent's vortex manipulator off Dorium Maldovar and stole a painting from Liz Ten showing the TARDIS exploding and space-time coordinates. She graffitied a diamond cliff at the dawn of time with the co-ordinates, then travelled to England in 102 AD to meet the Eleventh Doctor and Amy. The Pandorica lay under Stonehenge, transmitting a signal to summon an alliance of the Doctor's enemies. The Doctor got them to back off and sent River to fetch the TARDIS. Instead, it took her to Amy's house on 26 June 2010. When River told him the date, the Doctor realised the TARDIS was about to explode and told her to escape. (TV: The Pandorica Opens) Instead, she was trapped in a time loop of the first moments of the explosion. (TV: The Pandorica Opens / The Big Bang) The Doctor rescued her in 1996, told her his plan to use the Pandorica's restoration field to reverse the Total Event Collapse of the universe and was shot by a stone Dalek. River told the Dalek to look in its data banks for her, taunted it into begging for mercy, then killed it.

After the Doctor had restored the universe by erasing himself, River left her now blank diary at her parents' wedding so Amy could remember him back into existence. After a brief conversation about her marital status and identity, River told the Doctor he was "going to find out very soon now and I'm sorry, because that's when everything changes", and left him wondering. (TV: The Big Bang)

The Crash of the Byzantium
River was put in Father Octavian's custody in the 51st century for a mission to earn her pardon. She infiltrated the Galaxy class Byzantium to find its Home Box, into which she carved "Hello Sweetie" in Old High Gallifreyan and her temporal coordinates. This attracted the Doctor's attention twelve thousand years later, leading Amy and him to her and Alfava Metraxis. (TV: The Time of Angels) They defeated an army of Weeping Angels who had awakened in the planet's Maze of the Dead. (TV: Flesh and Stone)

Following this adventure, she visited Amy and Rory after the Doctor's "death" and exposed the truth behind many lies to her parents. (TV: The Wedding of River Song)

A pardoned woman
River was later pardoned and released from the Stormcage Containment Facility after discovering the man she murdered didn't exist at all throughout history due to the Doctor erasing himself from all databases as part of his return to the shadows. As a result of this she returned to Archaeology and became a professor. (TV: The Angels Take Manhattan)

Angels in Manhattan
River arrived in 1938 New York City via her vortex manipulator (TV: The Angels Take Manhattan) and set up the Angel Detective Agency where she was the sole employee, investigating the Weeping Angels' invasion of New York. During this time she went by the alias "Melody Malone." She was there for at least a month before a man named Rock Railton hired her to investigate what he feared to be a murder plot against him involving "the kiss of an angel." The following day, while attending a Starlight Studios party, she encountered an old man claiming to be Rock Railton, but believed him to a bum. When she encountered the man she recognized as Rock, he had no memory of their meeting in her office the previous day.

After dealing with two thugs that were hired to kill her, River returned to her office only to receive a call from head of Starlight Studios, Max Kliener. She agreed to meet him at his studio the next afternoon, where she was reintroduced to Rock, who claimed to remember their prior meeting. However, River knew he was lying when she asked about giving him coffee and he pretended to remember this although it never happened. She also noted that Giddy Semestre, Rock's co-star, also did not remember meeting her the day before at the party.

Max then led River down a block from the main studio and revealed to her a room full of giant bell jars filled with what appeared to be clones of Rock Railton Giddy Semestre and of Max's bodyguard, Hank Sissy. Max explained that they were not clones so much as everyday people who had had their flesh redistributed in their bodies to make them look identical to their template bodies. To do this, he had used "the kiss of an angel." The duplicates did not live very long, however, and were in fact growing old and dying out faster and faster because the Weeping Angel he was using to create his duplicates was growing stronger and therefore absorbing more and more of the victims' energy. Max planned to transform River into a copy of Giddy Semestre, but River kissed him using her hallucinogenic lipstick and managed to escape by killing the Hank copies and pushing Max into the arms of his Weeping Angel, who kissed him and turned him to dust.

As River was reversing the process to turn the other transformed victims back into themselves and escort them to safety, she was unaware that the Weeping Angel was being stolen from behind the curtain it was sitting behind via an escape hole that had been cut into the wall. She returned in time to see a van speeding off, presumably with the Angel inside. (PROSE: The Angel's Kiss: A Melody Malone Mystery)

After River's run-in with Max Kliener and his Angel, River met her husband in Manhattan, along with her parents. Rory was sent back in time to 1938 New York City by one of the Angels and met River. Amy and the Doctor had difficulty following him since all the time energy the Angels had consumed make time travel difficult. With the help of a Chinese vase as "landing lights", they managed to get through but found River trapped in the grip of one of the Angels; she had to break her wrist to escape and the Doctor used up some of his regeneration energy to fix it. Rory was locked in a cellar with a group of baby Weeping Angels but instead of sending him back in time, they just sent him to Winter Quay. When River, Amy and the Doctor found Rory, they also found an older version of him, dying in a bed. After that they heard loud thumps, made by the Statue of Liberty, who happened to be a Weeping Angel.

With the Angels closing in, River, her husband and her parents were forced to flee towards the roof and got separated on the way up. The Statue of Liberty was waiting for them and Rory and Amy decided to sacrifice themselves to create a paradox which would poison the Angels food source and kill them. River and the Doctor watched in horror as Amy and Rory threw themselves off the roof, and the paradox killed all the Angels except one, who somehow managed to survive.

The group found themselves in a graveyard that had a gravestone with Rory's name on it. As they were preparing to leave, the surviving Weeping Angel ambushed them and sent Rory back in time. Because of the paradox, and all the poisoned time energy, the Doctor couldn't take the TARDIS to find him so Amy decided to allow the Angel to touch her so that she could be with Rory. After a tearful goodbye to River and the Doctor, Amy turned away from the Angel and allowed it to touch her so that she could live with Rory for the rest of her life.

The devastated Doctor asked River to travel with him. Although she was upset about what had happened to her parents, River accepted, but told him "not always," and that there was only room for one psychopath on the TARDIS. The Doctor, in his depressed state of mind, didn't even pick up on the insult. Under the name "Melody Malone," River went upstairs to write the book that led the Doctor to 1930s New York and said that she would get Amy to write the afterword when she sent it to her for publishing, in hopes Amy could talk sense into the Doctor. (TV: The Angels Take Manhattan)

A Night in Darillium
The Doctor took River to Darillium to see the Singing Towers. Along the way, she met an earlier version of the Doctor and just missed two earlier versions of herself; apparently, the Doctor had been "promising for ages". (TV: Last Night) She later said he had wept as he said goodbye. He knew, although she did not, that her death was imminent. He gave her an upgraded version of his sonic screwdriver. (TV: Forest of the Dead)

The Library
In the 51st century, River was hired by Strackman Lux for an expedition to the Library to learn what had happened there a hundred years earlier. A cryptic message had been sent: "4022 saved. No survivors." Expecting trouble, she contacted the Doctor by psychic paper. The version of the Doctor who turned up, then in his tenth incarnation, had not yet met her. Bewildered, he agreed to help River's team.

River still had her battered diary of her life with the Doctor. She tried to use it to find the Doctor's place in his timeline, but realised he was a far younger version who neither knew nor trusted her. (TV: Silence in the Library) As the threat of the Vashta Nerada worsened, River knew she must prove she was someone he would come to trust completely. With profuse apologies, she whispered his true name into his ear. The Doctor was stunned and River had won his trust.

Time was running out. The Doctor was about to sacrifice himself to rescue Donna and more than four thousand others trapped in the Library datacore. River knocked him out, handcuffed him and took his place. She pleaded with him to not change their history, not a moment of what had or would come for them. She said he had always known this was coming. The Doctor began to babble questions. River smiled, said, "Spoilers" and was killed as the countdown reached zero. (TV: Forest of the Dead)

Epilogue
The Doctor reasoned his future self had given River his sonic screwdriver for a purpose. Inside it was a "neural relay" data chip holding her Data Ghost. The Doctor saved River by uploading her into the virtual world in the Library's data core, CAL. CAL had also saved the data ghosts of her archaeological team, giving her company in the virtual world. River would take care of her two virtual children and Charlotte (the girl wired into the mainframe) in the virtual world, reading out her diary of her many adventures with the Doctor and how sometimes "everybody lives" when the Doctor comes to call. Her story ended with her wishing her audience sweet dreams. (TV: Forest of the Dead)

The Tenth Doctor remembered her death when Davros asked him how many people had died in his name. (TV: Journey's End)

Alternate timeline
In an alternate timeline, River gained control of her suit's weapon system and did not kill the Doctor at Lake Silencio. A fixed point in time - his death - was ripped open; all time collapsed into a single moment, 22 April 2011 at 5:02:57 pm. In this crumbling timeline, she belonged to a group seeking to fix time and yet not end his life. They were led by Amy Pond, who also remembered the original world from her exposure to the cracks in time. River built a timey-wimey distress beacon to ask the universe's help for the Doctor, to which much of the universe answered with a resounding, "Yes!" She was wed to the Doctor and he revealed he was inside the Teselecta. They kissed and River killed "the Doctor" to restore the timeline. (TV: The Wedding of River Song)

Undated/Unchronicled events

 * The Doctor and River had a picnic at Asgard. (TV: Silence in the Library)
 * The Doctor and River shared an adventure in the Bone Meadows. (TV: The Time of Angels)
 * The Doctor and River visited Easter Island. (TV: The Impossible Astronaut)
 * The Doctor and River met "Jim the Fish". (TV: The Impossible Astronaut)
 * River attended a party with the Eleventh Doctor and helped him search pet shops for a Queen of England who had become a goldfish. (TV: Bad Night)
 * River and the Eleventh Doctor had an adventure involving a euphonium, a biplane and someone named Marilyn, possibly Marilyn Monroe. (TV: Good Night)
 * Her diary showed she had met the First Doctor at 76 Totter's Lane. When she heard Susan Foreman's voice calling, "Grandfather?" she wrote, "My hand leapt to the [vortex] manipulator and I got out of there in a shot. That is a conversation I am not ready for yet!" (GAME: The Eternity Clock)
 * River met the first nine Doctors. She erased his memories of her with mnemosine recall-wipe vapour to avoid corrupting his timeline. (GAME: The Eternity Clock)

Personality
In her first incarnation as the 'little girl', Melody was shy, innocent and terrified of the "monsters" who had trapped her in the spacesuit. (TV: The Impossible Astronaut) Her second incarnation, 'Mels', was saucy, often in trouble and chased by police just before her regeneration. She resented the Doctor and blamed him for historical disasters, but wanted to marry him.

In her last incarnation, River was very strong-willed; though brainwashed and raised to kill him, she decided the Doctor was "worth it" and saved his life, giving up all her regenerations to do so. (TV: Let's Kill Hitler) She resisted the upgraded astronaut suit and refused to kill him, heedless of the consequences. (TV: The Wedding of River Song)

River was frisky and cheeky like her mother, Amy. Like her father, Rory, she was stubborn, responsible and fiercely compassionate. She enjoyed showing off for the Doctor. She teased him, saying, "Spoilers!", of her foreknowledge and his. She kept her diary from him (TV: Silence in the Library/Forest of the Dead) and hid that his death at Lake Silencio was a hoax. (TV: The Wedding of River Song) She loved the Doctor wildly (TV: Forest of the Dead, The Angels Take Manhattan et al) and cared very much for her family. (Let's Kill Hitler, The Wedding of River Song)

River seemed at ease with being kept in prison much of her life for a crime she didn't commit, probably because she escaped easily. She once said she was breaking in  instead of out, implying she was perfectly content. (TV: A Good Man Goes to War) She did, however, work toward earning a pardon. (TV: Flesh and Stone) She was joyously bloodthirsty; she killed the stone Dalek after it shot the Doctor and begged for mercy (TV: The Big Bang) and slew dozens of Silents to cover the escape of her family. (TV: Day of the Moon) She was confident in her abilities, intelligence and sexuality. She was flirtatious and bawdy, but was serious when the situation called for it. (TV: The Big Bang)

River was ready to die for the Doctor the instant she decided he should live. She freely gave up her remaining regenerations to save him after she had poisoned him. (TV: Let's Kill Hitler) She took the Doctor's place to free the people saved in the computer that controlled the Library; she knocked him out and handcuffed him before hooking herself up to the computer. Before she died, she comforted him, saying although it was her last time with him, it was his first with her and he would see her again. (TV: Forest of the Dead) She also offered herself to close the time field on the Byzantium to stop the Doctor from doing it, until he told her it wouldn't be enough. (TV: Flesh and Stone)

Skills and abilities
Melody Pond was conceived in the TARDIS while it was travelling through the Time Vortex. This gave her some Time Lord DNA and because of this and the experiments of the Silence, she was be able to regenerate, despite the fact that both of her parents were human. In her final incarnation, River showed that she had enough control over regeneration to be able to use it to attack Hitler's soldiers. She was also able to use it to bring the Doctor back to life after she poisoned him, although she had to use up all of her remaining regenerations in order to do so. (TV: Day of the Moon, Let's Kill Hitler)

River was known as "the child of the TARDIS" and the time machine had taken a particular liking to her and taught her how to fly her. River was a very fast learner, becoming skilled at flying the TARDIS in a remarkably short time and she was able to control the time machine even more proficiently than the Doctor, despite the fact that the Doctor had been flying the TARDIS for centuries. (TV: The Big Bang, The Impossible Astronaut, Let's Kill Hitler)

In addition to piloting the TARDIS, River often used a Vortex manipulator and was able to use it to get wherever she needed to be. She was able to escape from Stormcage easily, even without the Doctor coming to pick her up. (TV: The Pandorica Opens, The Impossible Astronaut, A Good Man Goes to War, First Night, Last Night) She sometimes made impressive entrances whilst using the Vortex manipulator, such as when she made a bright flash of light appear when she teleported to Demon's Run. (TV: The Pandorica Opens, A Good Man Goes to War)

River was also incredibly strong and in her first incarnation she was able to force her way out of the spacesuit that had been holding her prisoner. Even when she was forced back inside the spacesuit in her last incarnation, she drained the energy from the weapon intended to kill the Doctor, despite saying that the spacesuit was in control. (TV: The Impossible Astronaut, The Wedding of River Song)

River was also extremely skilled with a gun, being able to shoot two of the Doctor's hats, one of which had been on his head, and kill a whole group of Silents in order to protect her family. She was also able to spin her gun and shoot down a surviving Silent without even looking at it. Considering the fact that she would have forgotten the Silence when she wasn't looking at them, she must have had very good hearing in order to sense that one was behind her. (TV: ''The Big Bang, The Impossible Astronaut, Day of the Moon)

River was also able to build a Timey-wimey distress beacon. (TV: The Wedding of River Song).

Behind the scenes

 * All of River Song's full-episode appearances are in stories written by Steven Moffat. She appeared in a flashback of her death (TV: Journey's End) and the end of (TV: Closing Time) to set up the events of The Wedding of River Song.
 * In an interview for a short video about the Eleventh Doctor's companions, Alex Kingston said River Song has encountered many incarnations of the Doctor and he "sends her into his past, where he knows he needs her expertise". Arthur Darvill said Kingston had been told more than anyone else about who River really is.
 * The conversation at the end of The Doctor's Wife implies River was conceived on a bunk bed. When asked about this, Steven Moffat and Neil Gaiman independently and simultaneously acknowledged this, joking about the possibility of the ladder. They later agreed they had accidentally made this canon by agreeing on it.
 * According to The Brilliant Book 2012, when River lived as Mels she used the surname Zucker. However, as brilliant as the Brilliant Book is, it is not considered a valid source for this wiki.
 * To date, River has been played by six different actors (a set of twins played Baby Melody), the most to portray a single companion on-screen.
 * River Song is the second Time Lord to change skin colour via regeneration on-screen, after K'anpo Rimpoche, whose second actor, Kevin Lindsay, was made up to look Asian. The actresses who played her in her Melody Pond and River Song incarnations were white. Both of Mels' actresses were black. In TV: Death of the Doctor, the Eleventh Doctor noted that his racial characteristics were not limited to white; he "can be anything." Rassilon has been portrayed by white actors Richard Mathews and Timothy Dalton on-screen, while black actor Don Warrington was Rassilon's voice actor and cover-art model in Big Finish Doctor Who audio stories. One of the incarnations that Romana tried out in between her Mary Tamm and Lalla Ward incarnations had blue skin. (TV: Destiny of the Daleks)
 * In Let's Kill Hitler River says she will gradually bring down the age of her body a little "just to freak people out", referring to the fact that a younger Alex Kingston has played later versions of River.

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