The Abbreviation is TTE, and the name is The Terran Empire, so the article "the" is part of the acronym. It seems rather arrogant to me to make a definite article part of your faction name, since it implies there is only one and can only be one, perhaps ever. This seems rather fitting for an Empire ruled by some manner of hereditary monarchy come about by way of a military coup, which is as you certainly know not the most well-regarded type of gouvernment, particularly to us Westerners (a professor I had in politcal science indeed stated that this type of non-traditional monarchy tends to last about 10 years, but the situation here could be sufficient to make it stable. North Korea also manages not to implode, despite effectively having been a hereditary absolute monarchy for three generations).
The power of the emperor does not seem to be absolute, and I figure there is some manner of democratic organs and constitution, but the fluff sounds like the emperor does indeed have power and uses it, unlike the british Queen who does not involve herself in day-to-day politics.