The April Fool's Fan of Imperio de Castilho is a massive, genial nation, ruled by General Anhanguera with an even hand, and remarkable for its anti-smoking policies, infamous sell-swords, and complete lack of prisons. The compassionate, devout population of 4.634 billion Castilhians have some civil rights, but not too many, enjoy the freedom to spend their money however they like, to a point, and take part in free and open elections, although not too often.

The large, corrupt government juggles the competing demands of Defense, Administration, and Law & Order. It meets to discuss matters of state in the capital city of Guaricana. The average income tax rate is 92.0%, and even higher for the wealthy.

The frighteningly efficient Castilhian economy, worth 789 trillion dollars a year, is quite specialized and led by the Arms Manufacturing industry, with major contributions from Tourism, Information Technology, and Book Publishing. State-owned companies are reasonably common. Average income is an impressive 170,325 dollars, and evenly distributed, with the richest citizens earning only 2.0 times as much as the poorest.

The military is slashing spending on conventional arms and diverting it to spending on prosthetic arms, the nation is ravaged by daily union strikes, a weakened police force struggles to maintain law and order, and interest rates mysteriously drop whenever the CBIDC Governor goes house hunting. Crime, especially youth-related, is totally unknown, thanks to a well-funded police force and progressive social policies in education and welfare. Imperio de Castilho's national animal is the fragata, which frolics freely in the nation's many lush forests, and its national religion is Christianity.

Imperio de Castilho is ranked 300,064^th in the world and 5,432^nd in The North Pacific for Most Primitive, scoring -297.53 on the Scary Big Number Scale.