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Kerr Avon was a renegade engineer and one of Roj Blake's followers. Later on, he became the second known captain of the Liberator and the Scorpio. Unlike most of the crew, Avon was motivated largely by personal self-interest.


Avon Space Fall

Avon aboard the London (A: Space Fall)

A native of Earth, Avon was a highly intelligent, aloof and sardonic computer expert found guilty of an attempt to embezzle five hundred million credits from the Terran Federation banking system. Avon first met Blake as a prisoner aboard the London, a cargo vessel transporting a group of convicted criminals to the penal colony on the planet Cygnus Alpha. Aboard the London, he assisted Blake in his abortive attempted mutiny on the journey, using his skills to take over the ship's computer. He subsequently boarded the Liberator along with Blake and Jenna, and became a member of the original "seven". (A: Space Fall)

Utterly self-serving, he had nothing but scorn for Blake's idealism, and their relationship was consequently somewhat strained. Despite this attitude, he single-handedly saved all of the crew's lives, including Blake, on several occasions.[source needed] After the Intergalactic War and Blake's disappearance, Avon took over as the group's leader, with minor challenges from Del Tarrant. Unlike Blake, he failed to inspire much loyalty due to his cynical and obsessive nature, however his skills continually made him invaluable. During this time, he himself develops a Blake-like antipathy towards the Federation(Servalan in particular) and eventually makes the decision to stop running and build his own rebel alliance.

Avon's relationship with the cowardly thief Vila was explored throughout the series, especially in the fourth season; their fondness for criminal activity often led them to partner up, yet they both strongly disliked each other at the same time. Avon and Vila ultimately end up being the only ones of the original crew to stay for the entire run of the series.

In spite of his dedication to logic, Avon ultimately succumbs to an emotional outburst. Before the start of the Intergalactic War, Blake tells Avon, "For what it was worth, I have always trusted you. From the very beginning." The trust that Blake put in him appeared to leave an impact. Despite having belittled Blake's crusade on a near-constant basis and implied personal dislike towards him, Avon made the effort to try and retrieve him from Terminal, and also sought his help once again on Gauda Prime. Upon discovering that Blake had apparently betrayed the crew, Avon was uncharacteristically horrified and shot him on the spot. He remained frozen until being completely surrounded by Federation troops and made no effort to bargain his way out of the situation, instead facing them directly over Blake's corpse.


Avon was a computer genius. He was described by Vila as the number two computer expert in the Federation, second only to the agent who caught him trying to steal five million credits from the Federation Bank. He helped Blake in his attempt to take over the London during their transit to Cygnus Alpha and went along as part of the prisoner boarding party to the Liberator. He has a brother, who he saw during an illusion manufactured onboard the Liberator when he, Jenna, and Blake boarded it. (A: Space Fall)

Avon was aboard the Liberator when the ship traveled to Cygnus Alpha. Already feeling Blake's crusade against the Federation was doomed, he tried to persuade Jenna to take the ship and its store of treasure and abandon Blake on the surface but she refused. (A: Cygnus Alpha) Avon was taken on a mission for the first time during the trip to Saurian Major, when Blake selected him and Vila to accompany him to sabotage a Federation communications complex. Avon was able to overload the base's reactor and destroy it. It was also during the mission that Avon first met Cally, who he would express rare affection for on later occasions. (A: Time Squad)

It was soon after this that Avon saved Blake from an explosive, in what he claimed was an automatic reaction. Blake thought enough of Avon to refer to him as a "friend", although Avon wasn't present at the time. (A: The Web) When the Liberator came to the aid of the Ortega, a spaceship from Destiny, Avon and Cally ended up being left behind to help with repairs while the rest of the crew transported the ship's cargo, a valuable neutrotope, to Destiny. Avon investigated the murder of three crewmembers and unmasked one of the crew, Sara, as a traitor planning to sell the neutrotope. (A: Mission to Destiny)

Vila and Avon were sent to receive an android from a Federation science facility, to stop them from using it to infiltrate rebel groups or spy on the general population. The Androids fail-safes stop them from leaving the planet with it in tact. (AUDIO: The Turing Test)

Blake asked Avon and Vila to find restricted federation files on rebellion cells. He created a fake identity for both of them to get the information before it is transferred to a new ship. He helped hack into the communications terminal to find out if the liberator was still about to ease Vila's paranoia. He helped with Vila's heist by getting his accomplice away so that he could create a second diversion, so that he could the data out. He then rescued Vila from a federation cell. (AUDIO: Disorder)

Avon and Blake went to the Bovee Mining Facility after discovering it as A1 clearance only secret. There they discovered a mine mining a rare mineral. He didn't feel that Blake was right to try and convert the prisoners to the rebellion. He pretended to be Travis to fool the leaders in the mind. (AUDIO: Counterfeit)

He went with Blake to help with a trial of a former federation office, Bellis, on the newly independent world. He wanted to know why there was disagreement between those who opposed and supported the trial. He also ask Cally to de-escalate a resistance cell buying for a fight. He questioned Bellis and wondered if she had someone in her pocket. Cally and he were kidnapped and were in a federation controlled building. He learnt that this was on the freed planet in a mutoid serum production plant. He realised that this meant that the federation was coming to fight back. However, Vila told Blake that he had seen their kidnapping and found them. (AUDIO: Ministry of Peace)

When Gan's limiter malfunctioned with potentially fatal results, Avon informed the crew of the existence of XK72, a neutral research facility that might be able to treat him, even though he had been planning to flee there if he ever tired of Blake's crusade. He made the decision sooner than expected when Blake placed the ship in danger by taking it through a gravitational vortex, offering the base's commander Farren teleport technology in exchange for sanctuary. When the pro-Federation surgeon Kayn betrayed the Liberator, Farren offered Avon a chance to stay on XK72 but he chose to return to the ship and warn them instead (somewhat fortuitously, since the Federation accidentally destroyed XK72 in the ensuing battle). (A: Breakdown)

Avon was given his first opportunity to command when Blake put him in charge of a team comprising himself, Jenna, Vila and Gan sent to locate survivors from a ship destroyed near Cephalon. Avon located a badly injured crewmember, Ensor, but accidentally left Jenna behind. Volunteering to return with the others to look for her, he instead encountered Meegat, who believed he was the promised one who would bring her people deliverance by launching the rocket containing their race banks. He accomplished the task and also rescued Jenna. It was also during the incident that he was first seen to kill someone, when he shot one of the Scavengers attacking the group. (A: Deliverance)

Not long after, it was found that everyone who had visited the surface of Cephalon was suffering from radiation poisoning. Remaining behind on the ship while Blake and Cally teleported down to Aristo, Avon became concerned when they failed to return and teleported to the surface with Vila. There he rescued the pair from Servalan and Travis and prevented the Federation acquiring Orac. He and the others were then cured by anti-radiation drugs provided by Ensor's father. (A: Orac)

Taking Gustav Nyrron back to Auron, he drugged the crew to get Nyrron of the liberator. This reminded him of a religion his father was part of, as Nyrron worked with a member of the hierarchy in a religion. He knew of Nyrron's work on Hoges Syndrome which his brother Torr Avon had. But Nyrron told him that it was a disease but a genetic disorder, so that there was no cure. (AUDIO: Brother)

Jenna Avon Shadow

Jenna and Avon on the Liberator. (B: Shadow)

During the mission to Horizon, Avon demonstrated his streak for self-preservation when the rest of the crew teleported to the surface one by one and were captured. After concluding with Orac's help that he could exist alone on the Liberator indefinitely and survive anything bar an attack by three Federation ships, Avon made plans to abandon the others...until he learned three pursuit ships were heading for the planet. He then launched a solo rescue mission that freed the others from Federation captivity. (B: Horizon)

After lying low after a previous attack, Avon and Vila responded to a morse code signal for SOS. He wasn't sure that they should help Vila's old friend Ragnus Lang. This proved right when Vila was captured by Rangus' gang. He had learnt that this was payback for something Vila did before his arrest. They were captured by Rangus' employer. They found a way to escape by jumping controlled from the top of the station. (AUDIO: Retribution)

Jenna helped Avon to escape in the Liberator after the rest of the crew were apparently killed on the latest excursion. He was injured in this attack. He eventually told Jenna what went wrong on the mission, where Blake's mercy caused Avon to make a mistake. With Jenna leaving his crew, he decided to recruit a new crew. The first person decided to usurp him as commander. They were nearly killed by by pursuit ships. This whole adventure was to distract the federation from Blake's mission. (AUDIO: Remnants)

Avon was part of the disastrous attack on Control(B: Pressure Point)and afterwards assisted in the retrieval of Blake from the Host, even though he had hoped the others would abandon their leader in the aftermath of Gan's death. (B: Trial)

He went to Earth to encounter Pol to show her something. He helped her realise that her treatment by the federation why she didn't see what was happening under the surface. He wanted to know why she was the only person to survive from a massacre. He left her with Jenna. (AUDIO:Logic)

With the Liberator needing access to a Federation translator crystal, Avon, along with Vila, contacted his old friend Tynus, the senior technician at Q-Base, with regards to acquiring one. Tynus came up with a plan to make it look as though a crystal had been destroyed but also informed the Federation of their presence. While retrieving the crystal, Avon ended up fighting with Tynus and killed him by pushing him into a live electrical console. (B: Killer)

Avon attempted to turn Travis over to the Federation but this inadvertently resulted in Blake becoming trapped on Exbar with Servalan on her way. He insisted on teleporting to the surface with Vila to help him defeat Travis.([(B: Hostage) Not long after, a mission to Albian saw Avon reunited with Del Grant, the brother of his late lover Anna. Grant blamed Avon for his sister's death, since she had died under Federation torture while refusing to betray him after their fraud scheme was discovered. Avon claimed he was unconscious at the time, having been wounded in a struggle with a man who had agreed to sell them travel permits. Avon healed the rift between them somewhat by risking his life to defuse a Federation solium radiation bomb, which would otherwise have killed Grant and everyone else on the planet. (B: Countdown)

Cally and Avon travel to Mogul to find information to help locate Star One. The were rescued by another set of rebels who had a ship from The System. He realised what the leader of the crew was doing and managed to get that ship destroyed, the resulting influx of a rare metal would destabilise the markets. (AUDIO: The Magnificent Four)

Avon's status as the de facto second-in-command of the Liberator was made clear when he took charge after Blake was an apparent victim of Federation brainwashing. He was highly doubtful of the attempted coup being planned by Governor LeGrande and Ven Glynd and was proved right when it transpired they had been set up by Servalan and Travis. (B: Voice from the Past) Left alone on the Liberator while Blake searched for Docholli, Avon and Vila used Orac to play the casinos of Freedom City and indulge in a dangerous game of speed chess. (B: Gambit)

Avon was part of the team that attacked Star One, only to discover it in the hands of a group of aliens from Andromeda, who were planning an invasion of the Federation. During the incident, Avon killed Travis and, with Blake injured, took charge of the Liberator as it joined the Federation in battling the alien fleet. (B: Star One)

With the alien fleet defeated but the Liberator badly damaged, Avon, along with the rest of the crew, abandoned the ship. He found his way to Sarran, where he met up with both Dayna Mellanby and Servalan. Servalan suggest they use both Orac and the Liberator to rule what remained of the Federation but Avon quickly realised she would betray him. He and Dayna ended up returning to the Liberator courtesy of Orac, only to discover it already in Federation hands. (B: Aftermath) Posing as a refugee named Chevron, Avon learned that someone else was already disposing of the Federation personnel - this turned out to be Del Tarrant, a deserter posing as a Federation officer. Together, they managed to dispose of the remaining Federation troopers and Avon was left in command of the Liberator with a crew consisting of Vila, Cally, Dayna and Tarrant. (C: Powerplay)

He was captured by Bracheeni along with Tarrant and Vila, and interrogated. He wanted to find more information about the location of Jenna and Blake. They crashed on a water planet and they discovered that they were in a weapons factory. He learnt about a bioweapon that the federation had been creating, and released it after seeing the effect it had on a rebel taking the antidote with him. (AUDIO: Incentive)

Under Blake gone and the Federation in a disarray, the crew was less involved in resistance activity. Avon disagreed with Tarrant risking Vila's life on Keezarn and took the rest of the crew to the surface to rescue him from Bayban. (C: City at the Edge of the World)

He decided to infiltrate a Federation archaeological team. He was taken to a moon with a building with a lot of logic puzzles and contacted Cally so that they could locate him. He started recalling stories as he made the way through the maze which concerned Cally but then forgetting what he told. He managed to get to the centre of the Ziggurat to learn what was there, was a kind of hive mind of the original logicians. He didn't like the fact that he was the perfect candidate for their society. (AUDIO: Corners of the Mind)

He decided to pursue a personal vendetta, making plans to gain revenge on Shrinker, the Federation torturer who he believed was responsible for Anna's death, although his attempt was delayed when the Liberator was instead diverted to Auron on a mercy mission. After Servalan's assault on the planet left almost the entire population dead, Avon sent Federation prisoner Deral to certain death at the hands of Servalan, even though he had helped save his life. (C: Children of Auron)

Returning to his original plan, Avon allowed himself to be captured by the Federation in order to get close to Shrinker, then had them both teleported back to the Liberator. He left Shrinker to die by sealing him in an underground cave but also learned a Federation security agent, Bartholomew, had killed Anna. Discovering Servalan a prisoner during an uprising, he was shocked to also encounter Anna and learn she was Bartholomew. Avon ended up killing Anna in self-defence, after which in an almost suicidal move he freed Servalan and removed his teleport bracelet. It was only an act of sadism from Servalan that inadvertently allowed him to return to the ship. (C: Rumours of Death)

When Cally was possessed by an undead alien, Avon refused to surrender to the alien's control and goaded her into attempting to kill him, knowing it would force Cally to fight back and allow him to destroy the alien. (C: Sarcophagus) Despite his apparent lack of interest in resistance activities, he went out of his way to foil Servalan's attempts to annexe Teal and Vandor. (C: Death-Watch)

He reluctantly answered Del Grant's call to deal with a superweapon. Leaving Vila and Cally to talk to a resistance contact, he went to find the scientist behind the weapon where Orac said it was. He discovered that it was cover for a laboratory. Grant and Avon learnt what the superweapon was and that it was the prison commandant that had contacted Grant. He started to worry if the destruction of Shoron was was his fault. He spent his time looking at the plans of the weapon after ordering their escape. Learning of Cally's message he let Tarrant and Dayna return to the planet to destroy the ships that contained the weapons. He and Grant went to the planet's surface to find his fellow crewmembers. He saw the devastation of the planet. He located a physically injured Vila and a mentally injured Cally. He then ordered the complete destruction the Federation fleet. He the threatened the Federation that he would used the Armageddon Storm in retaliation if they every used the weapon again, due to their near genocide of the Shoronites. (AUDIO: The Armageddon Storm)

Avon and Cally pretended to be a romantic couple on a pleasure station to chase up a piece of information that Tarrant and Grant had recovered. Cally informed him about the offer Solvin Tavac had made her. They all got caught up when the ship was attacked and fell out of orbit. He worked out a plan to get the ships stabilisers working and the escape pods clamps removed this involved a space walk. After returning to the ship he learnt that the person he was working with was the federation agent, and he learnt the truth of Tavac. He saved Tavac from the ship, before learning that Tavac was Vila's father. (AUDIO: Planetfall)

Soon after, Avon began receiving messages, apparently from Blake. Keeping this secret from the rest of the crew, he headed to a rendezvous on the artificial planet Terminal, only to discover it was a trap set by Servalan. Furthermore, his decision to fly the Liberator through a particle storm had irreparably damaged the ship. Avon and his crew ended up stranded on Terminal and the Liberator exploded as Servalan tried to take it out of orbit. (C: Terminal)

Avon medium close up on Terminal Rescue

Avon, after Dorian rescues him and his crew on Terminal. (D: Rescue)

Avon and his crew - bar Cally, who Avon reports as being dead, presumably killed by a booby trap in the bunker (though her body is not shown) - were rescued by Dorian and his spaceship Scorpio. Transported to the planet Xenon, they learned that the 200-year-old Dorian intended to transform them into a gestalt entity that would hold all his impurities and grant him eternal life. Avon foiled his plans by killing the creature that currently served as Dorian's receptacle, causing him to age to death. (D: Rescue) Avon spent the immediate aftermath of the incident working on a way to equip Scorpio with a functioning teleport, as well as foiling a hijack attempt by the Seska leader Pella. (D: Power)

With the Federation now expanding again, Avon began taking a more active role in opposing them. He took his crew, including new recruit Soolin, to Helotrix to investigate the Federation's pacification programme, although he disagreed with Tarrant and Dayna's decision to assist the local resistance group with a raid. He was stunned by their report that Servalan was still alive and observed that he needed to kill her himself. (D: Traitor)

Avon spent much of the next few months attempting to recruit scientists and technology to fight against the Federation. He often found himself at odds with the rest of the crew: he received disapproval when he sacrificed the life of Doctor Plaxton to evade a Federation attack(D: Stardrive), while he himself was furious with Tarrant and Dayne for destroying Muller's android, even though it posed a threat to human life. (D: Headhunter)

Contacted by an old associate, Keiller, Avon agreed to help out with a plan to steal a large quantity of gold from the planet Zerok, during which he and his crew killed several of the Zerok security forces. Avon had guessed, but not told anyone else, that Keiller's employer was Servalan and was hoping for a chance to dispose of her. Instead, Servalan left with the gold after paying the Scorpio crew with a worthless currency. (D: Gold) Not long after, Avon received an offer from the rogue scientist Egrorian, who had developed a new weapon, the tachyon funnel. After Avon realised Egrorian was working for Servalan, a series of double-crosses left Avon and Vila trapped onboard a shuttle with a rapidly decaying orbit. Needing to lose some weight in order to reach escape velocity, Avon was quite prepared to throw Vila overboard until he located a lump of parallel matter planted by Egrorian and jettisoned that instead. (D: Orbit)

Avon attempted to form the leaders of non-aligned planets into an anti-Federation alliance but was betrayed by one of the warlords, Zukan. (D: Warlord) With the other delegates knowing its location, Avon choses to destroy the base on Xenon and instead set course for Gauda Prime, where he and Orac had traced Blake some time previous, intending to form a new alliance around him. Scorpio was then destroyed in an attack by the planet's authorities and Avon teleported off the crashing ship with Orac. Joining up with Vila, Dayna and Soolin, who had teleported ahead of him, he followed a bounty hunter's flyer to a base only to learn that the bounty hunter was Blake and his captive was Tarrant, who claimed Blake had betrayed them. Before Blake could explain the truth, Avon shot him repeatedly and killed him. Moments later, the base was attacked by Federation troopers. Avon stood motionless as his entire crew were gunned down around him, then stepping over Blake's body as though guarding it, he aimed his gun at the troopers surrounding him and smiled. Gunfire was heard afterwards. (D: Blake)

Personal life[]

Anna Grant[]

Avon had an affair with a woman called Anna Grant whom he loved, and believed that she was betrayed by a Federation agent named Bartholomew, and was tortured and executed by the notorious Federation torturer Shrinker. However, during season three Avon killed Shrinker and attempted to locate Bartholomew, only to discover that Grant herself was Bartholomew and had been a Federation agent "running him." Avon killed her, but her dying words, "I let you go," implied that she had allowed him to escape. Avon's statement, "You never did," implied that he still loved her. However he seems to be not suffering unduly in the next episode, indeed he is well enough to offer emotional support to Cally. This suggests that he is in the process of dealing with the trauma of Grant's betrayal and lies and the fact that she was never who he believed her to be, revealed in his words to her in that final scene: “You weren’t even real” and further suggesting that any love that he mistakenly felt for her will dissipate as he continues to process the truth of what happened.


The first indication of a romantic involvment with Cally was when Cally tells Avon, "I'm interested in your work," and the two share a long, lingering glance (that also has the humorous side effect of making the normally unflappable Avon somewhat speechless). However, an actual romantic relationship between the two was never explicitly shown during the series. The closest they came to a romantic interaction was during the episode "Sarcophagus" when Cally's body was taken over by an alien lifeform seeking a host through which to live again. The alien tried to win Avon over (the only crew member not intimidated by it) by telling him, "Cally liked you," and that he could be at her side. Avon went so far as to kiss the alien (again, who was using Cally's body) in a ruse to gain its confidence and defeat it, freeing Cally in the process.

Similar references were made throughout the series; in the episode "Voice From the Past," Blake (under Federation mind control) fools Vila by telling him Cally and Avon have "paired up," which Vila quite readily believes. A slightly more bitter note was shown in the episode "Children of Auron"; when Cally reveals why she has never returned to her homeworld, she quite pointedly snaps, "Why do you imagine I've never gone back...affection for him?" at which point she storms off (and the other characters look towards Avon). In the next episode, "Rumours of Death", Avon assures Anna Grant, his former love interest, that there had been "nobody else"; he said this with Cally present, although Cally does not say anything verbally, and her face is not in close-up, one can still discern that she does seem somewhat shocked &/or upset by the scene unfolding between Anna Grant and Avon and again a little later at the teleport when Avon returns to the Liberator, there is a brief exchange of looks between them and Cally does appear visibly unhappy.

Cally and Avon quite often went on missions together and shared a knack for delivering quick-witted replies to the other's statements, which would somewhat indicate a growing affection for each other. However, Avon quite openly disdained her compassionate nature and her idealism, which he found to be only somewhat more tolerable than Blake's. Similarly, Cally at times openly mocked Avon's "cold" nature and often clashed with his more self-serving instincts. At one point during the episode "Horizon," Cally and Avon are the only two individuals left on board the Liberator, and Cally pointedly rejects Avon's idea of leaving together (because he believed they were dead, whereas she believed they may still be alive). During the episode "The Keeper," Avon takes the ship out of orbit (and teleport range, unknowingly leaving Blake, Jenna and Vila stranded in a moment of trouble in order to follow Blake's orders that Travis must be stopped) to blast Travis' ship, thinking Travis was on board. When Avon later attempts to do the same to what he believes was Servalan's ship, Cally flatly refuses, reminding Avon of what happened last time, which unfortunately was the wrong decision because Travis was onboard and consequently escaped to go on and betray humanity to the Andromedans.


Avon had a contentious relationship with Servalan in season three. During the episode "Aftermath," Servalan offers Avon the chance to rule the Federation by her side; however, regardless of whether she was serious or not, Avon pointedly refuses, shoving her to the ground during their embrace and stating, "I'd be dead within a week." In the episode "Death-Watch," the two meet on a neutral planet, and after discussing Servalan's latest scheme, embrace and kiss roughly (Servalan also remarked that she viewed Avon not as an enemy, but as a future ally). In the episode "Rumours of Death," Avon takes pity upon Servalan who was chained to a wall; similarly, it was she who reveals to him the truth about Anna Grant. However, these brief moments do not diminish the attempts of Servalan to kill Avon and the rest of the crew (although, at one point in season four, she does purchase Avon as a slave from a slave trader, grossly outbidding anyone else's offer).

Behind the scenes[]

  • Paul Darrow appeared as Avon in 51 of the 52 episodes of Blake's 7. The only episode in which he did not appear was the pilot, The Way Back.
  • In the final season, the BBC demanded that the metal studs on Avon's boots should be removed, as they were "unacceptably aggressive."
  • When Gareth Thomas quit the show and ideas for a recasting were abandoned, Avon became the main protagonist in Series C and D.
  • The actor was inspired by the 1930s-40s films of Humphrey Bogart, whose characters smiled only in the face of catastrophe (as in the final shot of Terminal, where Avon smirks ironically at the camera after the destruction of the Liberator, and Gold, when Avon discovers their heist only supplied Servalan with money).
  • Paul Darrow was the only Blake's 7 cast member to write for it. He at first tried scripting an episode titled Man Of Iron in 1981. However it was never put into production. In 1989, he published Avon: A Terrible Aspect, a prequel which detailed his character's origins. After becoming a regular at Big Finish Productions, Darrow wrote the Lucifer trilogy to conclude Avon's storyline, as well as the short story Rock Star and the audio drama Erebus.