Character Relationship Map: Blake's 7

Characters

• Dayna Mellanby (played by Josette Simon) — protagonist

  Weapons expert who joins Avon's crew in Series Three. She survives the crew's escape from the ship's destruction and participates in the campaign against the Federation until she is shot by Federation...

• Vila Restal (played by Michael Keating) — supporting

  A thief recruited early in the rebellion who joins Blake's crew aboard the Liberator. He plays key roles in discovering the alien fleet and escaping Terminal's destruction. He survives until the final...

• Kerr Avon (played by Paul Darrow) — supporting

  A reluctant computer engineer and embezzler who becomes Blake's core follower and later assumes leadership after Blake's disappearance. He pilots Liberator during the alien invasion, later commandeers...

• Zen / ORAC (played by Peter Tuddenham) — supporting

  The primary computer aboard the Liberator. Zen initially guides the ship, while a secondary unit named Orac predicts the vessel's destruction. Orac is later recovered by the crew, travels aboard Scorp...

• Del Tarrant (played by Steven Pacey) — cameo

  A mercenary who joins Avon's crew in Series Three. He remains aboard Scorpio during its abandonment, pilots the damaged ship, and is rescued by Blake. After returning to Avon's side, he is shot alongs...

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Kerr Avon → Del Tarrant (Commander to Operative) — Avon asserts absolute tactical authority during the season finale crisis, overriding Tarrant's presence.

  "In episode 13, Avon secretly takes over the ship and flies it through a hazardous enzyme field."

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Zen / ORAC → Vila Restal (Crisis Partner) — Vila's interaction with ORAC directly prevents a mental reprocessing catastrophe for the entire crew.

  "In episode 10, Vila saves the crew by telling riddles to Orac."

• Kerr Avon → Vila Restal (Mission Partner) — Vila executes high-risk surface missions to secure ship resources and weapon crystals.

  "In episode 6, Vila must help in obtaining a treasure on the planet Keezarn."

• Kerr Avon → Dayna Mellanby (Crewmate) — They reunite and operate as core crew members, sharing survival objectives.

  "In episode 2, Avon and Dayna return to the Liberator together after the crew disperses."

• Dayna Mellanby → Zen / ORAC (Crewmate) — ORAC's navigation and analysis capabilities directly impact Dayna's survival during the Ultraworld incident.

  "In episode 10, the crew go to the planet Ultraworld, only to discover it is a mental reprocessing plant."

• Del Tarrant → Zen / ORAC (Crewmate) — ORAC's systems are critical to crew survival during the Ultraworld mental reprocessing crisis.

  "In episode 10, Vila saves the crew by telling riddles to Orac."

• Dayna Mellanby → Vila Restal (Crewmate) — They collaborate on resource acquisition and survival strategies during the Keezarn arc.

  "In episode 6, the crew strike a deal for crystals needed for Liberator's weapon systems."

• Del Tarrant → Vila Restal (Raid Partner) — They participate in joint raiding operations that lead to their marooning and subsequent survival efforts.

  "In episode 5, Tarrant decides to raid a Federation freighter but heads into a trap and the Liberator is captured."

• Del Tarrant → Dayna Mellanby (Crewmate) — They serve together as crew members following their rescue and return to the ship.

  "In episode 2, the rest of the crew are rescued by a medical ship and eventually brought back to the Liberator."

• Kerr Avon → Zen / ORAC (Observer to Archive) — ORAC provides essential navigation data and historical records that guide Avon's strategic decisions.

  "In episode 4, Orac steers Liberator off course to investigate a black hole."

Story Analysis

A four-season arc of rebellion, fragmentation, survival, and unresolved betrayal centered on a small crew under pressure.

Plot Progression

1. Season 1: Rebel Formation — The first season establishes the Liberator crew as fugitives assembled around Blake's rebellion and the struggle against Federation power. Trust is tentative, but shared danger and pursuit turn the gr...
2. Season 2: Strategic Escalation — The crew pursues Star One, faces larger Federation conspiracies, and relies more heavily on Orac. Blake's cause becomes more system-level, while the team begins to feel the cost of relentless oppositi...
3. Season 3: Fracture and Reassembly — The Liberator is damaged, the crew disperses, and leadership becomes unstable. Avon, Tarrant, Dayna, and later others rebuild a new operational order under harsher and more fragmented conditions.
4. Season 4: Survival Politics — The crew now operates through Scorpio, facing pacification drugs, assassins, and opportunistic scientists while trying to keep any resistance alive. The tone becomes more cynical, with alliances based...
5. Season 4: Gauda Prime Endgame — Orac leads the crew to Blake's trail, and the series ends in uncertainty about Blake's loyalty. Avon and the others arrive prepared for confrontation rather than reunion, closing the story in ambiguit...