Replaying Metal Gear Solid and just now I noticed how much in common Gray Fox and Vergil have. Both had to grow up fast after being orphaned and take care of themselves since childhood, both fight for what they believe in without really caring it might wipe out a good chunk of humans, both are big rivals to the main hero, both returned as dead person (or something) in a special armor, both prefer blades over guns, both had their... uh, crazy moments that came forward when their connection to the hero was being slowly revealed, both left pain in hero's heart after nasty death by the hand of the main baddie.