Yeah, I might join this. Hopefully it doesn't sputter out after five IC posts have been submitted. 

I'll be running a human-esque faction: a 130 billion-strong collective of half-baked transhumans that live on a giant ring installation dedicated to maximizing the personal pleasure and joy experienced by its inhabitants. Think Disney Land and Las Vegas (except bristling with an impressive myriad of weapon emplacements).

They have the usual superhuman fare going for them: incredible physical capabilities and biological immortality. Diseases, both conventional and artificial, don't phase them. 

The only difference is that they're a bunch of drop-dead gorgeous featherbrained savants. They're superbly adept at crunching complex equations in their heads and recalling past happenings with photographic detail, but their capacity to engage in abstract thought is severely stunted. They're disgustingly impulsive--very childlike even--and are quite histrionic in their approach to social interaction with one another and with the various alien species of the galaxy. Most folks may find them to be a grade-A addition to any group outing in the beginning, but as the casual flings, rampant gossiping, and pathological obsession with being adored and desired by everyone around them intensifies geometrically, "friends" start dropping off fast.

Some aliens may have learned to manipulate the occasional ring worlder by appealing to their passive narcissism. When applied on a national level, a lone space nation could hypothetically finesse a lot of free stuff out of these airheads if they knew which buttons to appropriately push.

They also have a deep-grained instinct to correct looming disasters in the galaxy (run-away altruism at its finest) but take special pleasure in interacting with very primitive worlds in order to garner their veneration by showcasing their civilization's immense technological prowess. 

Wowing Stone Age tribal societies with a pair of molecular disruption claws does wonders for the old ego. 

They're an obnoxious lot sure, but the ring worlders have a storied legacy of taking in war refugees by the millions and using planetary engineering technology to reinvigorate the shattered homeworlds of the galaxy's vagrant species when they can get away with it. 

I know Sigma picked up humanity a few pages back, so I'm willing to brainstorm with him on how to fit this creation into his faction's history.