Overview: What It Means to Be One of the 12
In the reimagined Battlestar Galactica continuity, the 12 Humanoid Cylons are a small, secretive humanoid model group engineered by the Final Five to resemble humans and infiltrate civilization. Each model shares core traits like resurrection biology and mental projections, yet possesses distinct personalities, alliances, and narrative functions. They are not a random collection of villains but a layered cast designed to explore identity, belief, and what it means to be human.
This guide serves as a durable reference to the complete lineup of the 12, their canonical models, and the roles they play across the series and webisodes.
The Complete Lineup of the 12 Humanoid Cylons
The canonical 12 models were created or evolved by the Final Five, with their identities and purposes revealed over the course of the series. Below is an answer-first summary of the 12, followed by deeper context, model lineages, and verification notes.
Quick Reference Table
| Model Number / Name | Key Traits | Primary Role in the Narrative | Notable Notes |
|---|---|---|---|
| Number One (John Cavil) | Cyrano, manipulative, ideological | Primary antagonist; orchestrator of the Cylon plan | Resents the Final Five; multiple copies |
| Number Two (Leoben) | Mystical, manipulative, prophetic | Tempter and strategic planner | Sees himself as an instrument of a higher plan |
| Number Three (D'Anna) | Zealous, relentless seeker of truth | Emissary and theologian; driven to uncover origins | Resurrects; ultimately has visions of the Five |
| Number Four (Cavil) — often John Cavil | Charismatic, duplicitous, strategic | Infiltrator and manipulator within Colonial society | Shares features with John Cavil; varies by continuity |
| Number Five (Samuel T. Anders) | Intense, principled, wounded | Resistance leader; connects to the Final Five | Becomes the hybrid's counterpart; unique biology |
| Number Six (Caprica Six) | Alluring, ideological, confrontational | Temptress and ideological counterpoint to Baltar | Multiple copies; central to Caprica Six lineage |
| Number Seven (Daniel) | Artistic, hedonistic, rare | Minimal direct impact; highlights model diversity | Often cited as least seen; reflects experimental line |
| Number Eight (Sharon Valerii) | Conflict-driven, torn between sides | Infiltrator sleeper; mother of Hera | Multiple copies, most notably Boomer and Athena variants |
| Number Nine | Underdeveloped in canon | Background presence; limited narrative weight | Rarely featured; acknowledged in cast lists |
| Number Ten | Minimal canonical detail | Background presence; no defining traits | Theoretical or placeholder status in some materials |
| Number Eleven | Sparse description | Background presence | Limited screen time; acknowledged in cast counts |
| Number Twelve | Sparse description | Background presence | Rarely featured; recognized in official cast lists |
Why the Number 12 Matters
The choice of 12 aligns with series mythology and real-world resonance, echoing religious and historical groupings. References to 12 tribes, 12 apostles, and a circular Colonies arrangement create symbolic weight. The Final Five deliberately designed 12 models to mirror these numerological themes while ensuring functional diversity in temperament and role, from infiltrators to philosophers to warriors.
Canonical Details and Model Variants
Each number can have multiple copies, and some models show internal variation. For instance, Number Six has several copy lines with slightly differing motivations, while Number Eight splits into distinct versions based on timeline and allegiance. Number Seven remains the most obscure, appearing with minimal narrative necessity. The table below clarifies key model identities, their canonical certainty, and appearances.
Model Lineage and Verification
| Model | Name(s) | Confirmed Appearances | Source Type |
|---|---|---|---|
| One | John Cavil | Series, The Plan, webisodes | Canonical, named |
| Two | Leoben Conoy | Series, webisodes | Canonical, named |
| Three | D'Anna Biers | Series, episodes | Canonical, named |
| Four | John Cavil variant | The Plan, references | Canonical, context-dependent |
| Five | Samuel T. Anders | Series, episodes | Canonical, named |
| Six | Caprica Six | (and variants)Series, webisodes | Canonical, named |
| Seven | Daniel | Background mentions only | Canonical, minimal presence |
| Eight | Sharon "Boomer" Valerii, Sharon "Athena" Agathon | Series, webisodes | Canonical, multiple versions |
| Nine | Unnamed | Cast lists, background | Canonical, not detailed |
| Ten | Unnamed | Mentioned in cast materials | Canonical, no detail |
| Eleven | Unnamed | Mentioned in cast materials | Canonical, no detail |
| Twelve | Unnamed | Mentioned in cast materials | Canonical, no detail |
Narrative Functions and Relationships
The 12 are not merely antagonists; they serve as foils, mirrors, and catalysts for the human characters. John Cavil embodies cynical rationalism versus the Final Five's latent faith. Caprica Six challenges guilt and redemption, while Sharon/Eight embodies the blurred lines between victim and aggressor. Their interactions with the Galactica crew—through diplomacy, seduction, combat, and uneasy alliances—drive the series' exploration of trauma, memory, and what both sides must become to survive.
The Final Five Context
Understanding the 12 requires acknowledging the Final Five: the ancient Cylons who traveled between Earth and the Twelve Colonies to prevent repeats of cycles of war. They designed the eight model framework and, with guidance and error, shaped the 12 to infiltrate Colonial culture while advancing their own objectives. The 12, in turn, were engineered to lack the full emotional spectrum of the Final Five, making them dangerous and ideologically rigid.
Common Misconceptions and Clarifications
- Not all 12 are named in the series — only a handful receive consistent on-screen focus.
- Resurrection is shared by all humanoid models, but its impact varies by model philosophy.
- Individual copies within a model can diverge significantly, as seen with Number Six and Number Eight.
- The terms "Cylon" in casual usage often refer specifically to the humanoid 12, whereas the Cylon faction historically included other models and skinjobs.
Continuing Legacy
The 12 remain central to the series' legacy because they embody its core questions: What is humanity? Can a created being possess a soul? How do memory and trauma shape identity? Their presence ensures the show remains a touchstone for serialized storytelling that prioritizes character over spectacle.
Attribution and Verification
Information in this article is drawn from canonical episodes of the 2003–2009 reimagined series, including the miniseries, season arcs, and official web content such as podcasts and webisodes where naming and model traits are confirmed. Variations in on-screen time and narrative emphasis do not negate the canonical status of all 12 within the show’s established continuity.