Captain Jacob Keyes of the first Halo game. Don't get me wrong, I thought Miranda Keyes was a great character. And I know there was signifcant story necessity for Keyes' death in the first game. But if you read the Halo books then you get to see what a massively badass son of a ***** Keyes was. He appears several times and helps the Spartans out on various missions, including nuking an entire asteroid colony and a bunch of Covenant in the book The Cole Protocol. Plus, in the book The Fall Of Reach, he basically destroys a Covenant destroyer, a ship much bigger than the one he's flying and several kilometres in length, by ramming it with his own ship. He does this while successfully outmaneuvering several other Covenant ships firing plasma bolts at his vessel. The move becomes known in the Halo Universe as 'The Keyes Loop'. So he's basically a bit of a hardcore uber-captain, and he's Sgt. Johnson's superior. These facts alone make him worth his own game in some fashion...
