The Lover Girl of Centennium is a massive, environmentally stunning nation, ruled by Andromisa with a fair hand, and notable for its museums and concert halls, state-planned economy, and anti-smoking policies. The compassionate, democratic population of 1.564 billion Centennials hold their civil and political rights very dear, although the wealthy and those in business tend to be viewed with suspicion.

The medium-sized, liberal, outspoken government juggles the competing demands of Administration, Education, and Welfare. It meets to discuss matters of state in the capital city of Terra-Andromae. The average income tax rate is 61.7%, and even higher for the wealthy.

The all-consuming Centennial economy, worth 181 trillion Apples a year, is driven entirely by a combination of government and state-owned industry, with private enterprise illegal. The industrial sector, which is broadly diversified, is dominated by the Information Technology industry, with significant contributions from Beef-Based Agriculture, Book Publishing, and Basket Weaving. Average income is an impressive 116,332 Apples, and evenly distributed, with the richest citizens earning only 2.3 times as much as the poorest.

Pizzerias often get delivery orders for Saturn and alien first-born are considered a delicacy (Centennium has found 4 easter eggs), thousands of cute furry kittens are trampling everything in their path (Centennium has found 4 easter eggs), Andromisa spends Halloween alternatively growling and howling (Centennium has found 4 easter eggs), and it is universally agreed that the first 31 issues are the only ones with humor and charm (Centennium has found 4 easter eggs). Crime is totally unknown. Centennium's national animal is the Tree, which is also the nation's favorite main course, and its national religion is Star Sista.

Centennium is ranked 237,589^th in the world and 440^th in Starlight for Fattest Citizens, with 7.98 Obesity Rate.