The Fighter of TMNT is a mammoth, cultured nation, ruled by Splinter with an even hand, and renowned for its public floggings, avowedly heterosexual populace, and infamous sell-swords. The hard-nosed, devout population of 6.921 billion TMNTians are highly moralistic and fiercely conservative, in the sense that they tend to believe most things should be outlawed. People who have good jobs and work quietly at them are lauded; others are viewed with suspicion.

The large, corrupt, moralistic government juggles the competing demands of Education, Administration, and Industry. It meets to discuss matters of state in the capital city of Sewers. The average income tax rate is 51.6%, and even higher for the wealthy.

The frighteningly efficient TMNTian economy, worth 669 trillion deniers a year, is quite specialized and led by the Information Technology industry, with significant contributions from Uranium Mining, Book Publishing, and Door-to-door Insurance Sales. Black market activity is rampant. State-owned companies are reasonably common. Average income is 96,669 deniers, and evenly distributed, with the richest citizens earning only 2.4 times as much as the poorest.

Law schools are hurrying to teach the "prank defense" to their students, increasing numbers of children in TMNT have different eye and hair color to their supposed fathers, barbed wire entanglements and guard towers surround the Sewers Natural History Museum, and increasing inclusiveness is a sign of the times. Crime is moderate, perhaps because of the country's complete lack of prisons. TMNT's national animal is the turtle, which teeters on the brink of extinction due to heavy metals seepage into national waterways, and its national religion is Pizza.

TMNT is ranked 89,830^th in the world and 22^nd in Square Enix for Highest Average Tax Rates, with 51.56 Effective Tax Rate.