To be added later.
If you plan on playing the Empire of the Hand or the Pentastar Alignment, don't expect to come across the Hapans, they are by the time you reach them, conquered by the Imperial Remnant or the New Republic.
Hapan Fleet: There is a possibility to gain a Hapan fleet in any Galactic Conquests featuring Hapes. Every time you capture Hapes you get 2 Battle Dragons and 3 Nova Cruisers. After you capture Hapes, take the fleet and leave for the enemy to recapture it, then recapture it and you'll get this again.