Mass Effect 2 Trailers: 'Why I Kill,' by Grunt and Thane

"I'm joining Shepard not because I love humans but because I love to fight," Grunt the Krogan Mass Effect 2 companion character explains in the first of two new killing-centric trailers for BioWare's January 26-due PC and Xbox 360 sci-fi RPG sequel.

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Murder isn't all a bed of roses though, as Thane the assassin reveals a slightly more nuanced and highbrow take on bumping geezers off in his trailer.

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