Alliance are a serie of different mods. On the Star Wars GC, you can play the civil war Empire vs Rebel era + Black Sun and soon the Republic and CIS.
Well, these are three of the new models from the site Solcommand.com which I have added as Chiss starships. My idea from the Chiss is based in information from books, in the clone wars time line or before the republic contacted them and they discovered a very powerful race armed with small starships. After it and with the empire, the Chiss assimilate most of the technology from the empire and they made their own changes on it but they maintained their older designs. This is the reason because they will use these units and empire units.
I like too much these models from the site Solcommand.com because they are free, they are all them very similar as made by the same race and they are very good for to be converted to the game.
looks a little bit like a asuran warship from stargate Atlantis xD