As BioWare describes them, the Trooper is an elite special forces element of the Republic's military, a.k.a. a good guy. They're evidently highly effective at close-quaters combat, carry sticky grenades and have access to numerous enhancements for their standard "modern rifle." That and myriad armor variations that will boggle any fanboy's mind. Check out these bad boys (and girls, hopefully) in motion at the official site.