G4 has cranked out a two-minute video preview of Zer0, the stealth-focused character that utilizes guns, decoys, and blades to eliminate his foes in Borderlands 2. Plenty of new gameplay footage is included, so the video is well worth your time if you consider yourself a Borderlands fan.
In any event, a "cybernetic ninja" sounds like something I'd enjoy, so this will likely be the character I pick during my first play-through.