Sorry, I don't have many specifics on body mass, density, etc. But I do have some.
Behold, the Braknek (Brack-neck.) A strong race of humanoids. They have 4 arms each, and 3 legs. Their religion centers around combat and a winner-takes-all mentality. However, they are now mostly civilized, and gladiatorial combat is now a Expert only, televised sport. They are ready for any sort of war with an arsenal of much higher caliber weapons than anyone else, and they have a great store of it, but unless provoked, they will not use it senselessly. Their planet is rare, because it's a binary planet system, each one almost identical, circling together in a stable orbit around it's star. It has 1 moon, which keeps the whole system stable.
Population: 14 Trillion.
Planet name: Annoius and Annoius B
Star Name: Sola
Other planets: 5
Names: Zole, Purtok, Nipcra, Julio (Ju-leigh-oh,) and Breft.
(Annoius) Moon(s): 1
Moon(s) Name(s): Harju
Prevous Name: Star: Jakobi. Planet(s): Jakobi C1, Jakobi C2, Jakobi C3 and Jakobi C3.5, Jakobi C4, Jakobi C5, and Jakobi C6
Star type: Green Giant (Due to undiscovered elements, it emits green light, as well as maintaining stable burning at a size at which many other stars would disperse their gases into space.)
FTL Capability: Yes.
Colonized planets: 78
Has diplomacy in place: Yes.
Galactic Location: 230 light years from center.
Star Cluster: Obsid Cluster.
Hostility (on scale of 1 to 10): 3
Allied races: @Galacticvoyager chooses!
Sorry, no pics.