And in that vid we only see Vulcans, Klingons, Humans and Andorians.
We actually see quite a bit more:
Cardassians, Aenar, Bajoran, Vulcan, Founder, Trill, Nausicaan, Bolian, Andorian, Vorta, Klingon
Or add to the universe...
In this segment, among others they show us a human male. This entire trailer is just to show the vastness of the customization allowed through the character creation in Star Trek online. We can play as virtually any species in Star Trek Online, and serve either Starfleet or the Klingon Defense Force.