Three Great Powers
The Three Great Powers were the species-nations that dominated the universe and its politics from around 400 AHE and into the era of BHH: the Helltunans, Olympa and the Evon. The Helltunans had military might and a vast empire (hard power), Olympa had economic and social influence (soft power), and the Evon made the advanced technology and scientific advances on which other species relied (sharp power). The Evon were the newest — the Olympans and Helltunans had dominated the universe for at least two hundred years before 400 AHE.
Helltuna was the most powerful of the three. Traditionally, Olympa and Helltuna were roughly equally powerful, and Olympa was the moral counterbalance to a more aggressive Helltuna. The Evon then became a third great power, aligned with Olympa against Helltuna, as the importance of high technology increased. Meanwhile, Helltuna overtook their Olympan rivals. Over time, Olympa became less concerned with their traditional ethical values and softened their stance towards Helltuna; the Evon became the main practical opposition, even if the Olympans' traditional position meant they were looked to as the moral leaders.
By BHH, Olympa was drifting towards equidistance between the other two powers, whereas the election of Ciarraí Teagwyn Kavanah and Sabriel Lunadelle Redena on Evonia made the Evon even more stridently anti-Helltunan.