I guess if I'm quick I might just be able to sneak an entry in before the deadline's up.
This is kind of a tough call. It's definitely a choice between Scar and Celtic, and there are good reasons for picking either one.
Celtic has a really great mask design that really makes him stand out, and he's able to go toe-to-toe with a pretty nasty Alien and
almost come out on top; right before his "obligatory Predator overconfidence (or stupidity; tomato/tomAto
)" gets the better of him. He has a counter for everything Grid is throwing at him for a good long while there, and he's clearly got some moves, which makes for a pretty cool fight scene.
On the other hand, Scar has a "classic" mask design as well as some of the most badass moments of the film (slicing that one Alien's head in half when it tries to sneak up on him without even missing a beat, and that great 'spear to the head' spin attack on the Queen at the end). And while we never really see him go hand-to-hand against any of them like Celtic does, he's able to rack up far more xeno kills than.....well, none.
Plus when one of those kills is a Queen, you know you've done well by pretty much anyone's standards (even if he did have some help with that
).
So I think I'm going to have to go with Scar. If only his situational awareness was just a
little bit better, I think he could have gone on to great things.