Doctor Who Codex

Raxacoricofallapatorius

Where crime is licensed, loyalty is blood-deep, and methane is life.

Raxacoricofallapatorius stands as a beacon of bureaucratic corruption in the galaxy, serving as the homeworld for the Slitheen family and their Raxacoricofallapatorian kin. Far beyond Earth's solar system, this planet operates on a unique legal framework where criminal activity is not eradicated but licensed, taxed, and strictly managed by clan hierarchy. While most galactic citizens know it only through the infamy of its Slitheen offspring—greedy methane-breathers who attempted to harvest Earth's core in 2006—the world itself embodies a complex society where lawlessness is merely a matter of paperwork.

Species Native To
Raxacoricofallapatorians (including Slitheen sub-clan)
Primary Occupation
Interstellar Crime, Commerce, and Bureaucracy
Notable Residents
The Blathereen Family, The Slitheen Family
Atmospheric Requirement
Methane-rich environment for native respiration
Role in Series
Antagonist Home Base / Interstellar Court of Law

Lore & Background

Society here revolves around the family unit, with loyalty to the clan often superseding universal morality. The Slitheen are not a distinct species but a notorious criminal branch; their cousins, the Blathereen, function as intergalactic law enforcement, tasked with hunting down rogue relatives who violate statutes or tarnish the family name. This creates a dynamic where justice is delivered by kin, and a crime is only punishable if caught by one's own bloodline. Biologically adapted to a dense, methane-rich atmosphere, natives possess high radiation tolerance but require specialized technology or skin-suit prosthetics to survive in oxygen-heavy environments like Earth—a painful process that masks their green scales beneath human flesh.

In Their Own Story

For the Slitheen, Raxacoricofallapatorius was less a home and more a distant threat looming over their Earth scheme. While they plotted from Downing Street in 2006, the planet's bureaucracy waited in the wings; when the scheme collapsed, Blathereen officers arrived not to save them, but to collect the family business debts. The Doctor ultimately ensured one Slitheen returned, condemned to face her kin and the planet's unique brand of justice, proving that no matter how far a criminal flees, the family always comes calling.

Reader's Guide

Raxacoricofallapatorius is a distant planet that serves as the ancestral home to the Slitheen and Blathereen families, two branches of the same Raxacoricofallapatorian species. In the narrative of Doctor Who, it functions primarily as the launching pad for various schemes targeting Earth, most notably in the early revived series where the Slitheen attempted to destroy the planet for profit. The world is significant because it establishes that these aliens are not mindless monsters but part of a complex, albeit corrupt, society with its own laws and law enforcement.

The planet matters to fans as the origin point of some of the show's most iconic villains who combined comedic elements with genuine threat. It highlights the theme of bureaucracy in space, where crime is regulated by family ties rather than universal morality. Visually, it represents a contrast between the mundane human world and the bizarre alien reality, often shown through the grotesque nature of the Slitheen suits versus their true forms. Understanding this setting helps viewers appreciate the depth of the antagonists; they are not just invaders, but displaced relatives operating within a specific cultural framework that values family success above all else.

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