Not in Star Wars, but worst? **** and murder. No point in going into detail, but it was a damned dark campaign with cycles of revenge spiraling out of control. Not playing that anymore.
These days, I tend to play pretty nice people. My current character is an idealist wannabe jedi who is pretty damned devoted to sidestepping necessary evils. While she obviously isn't much of a fan of the empire, she is wary of most rebels she's bumped into as well. After all, something rubs her the wrong way about the idea of violently restoring democracy by toppling a regime that arguably can be considered democratically elected, but she's slowly coming around to it. The other PCs are more grey (of the darker shade), in particular the force sensitive zabrak who is a violent criminal and compeletly abhored by the idea of taking someone's free will away from them, meaning that he's perfectly fine with threats, torture and murder to force someone to do something but sickened by the idea of jedi mind tricks. Currently, my characters sticks around him in order to be a positive influence, or if it comes to that, stop him.