Bishop

The android character in the movie Aliens played by Lance Henriksen and definitely the coolest character in the movie apart from Ripley. Bishop is initially mistrusted by Ripley because he is an android and in Alien Ripley was betrayed by another android (Ash). But Bishop turns out to be good and Ripley relents. One of the best bits is when Bishop puts his hand on top of another character's and stabs the gaps between his fingers with a knife at superhuman speeds. Also Bishop appears to have an alien burst out of his chest like Kane in the first film but it is actually the Alien Queen stabbing him with her tail. Awesome film. Awesome character.