I would have said Gordon Freeman, but by now.......yeah......
And then I thought of Navi as the worst, but then it immediately got shot down.....so...
Best: Engineer, The one that points out spies,because who doesn't want an in-depth look at how you build sentries and teleporters(Dispensers are a no.) that fast?
Somewhere in Between:Wander, I don't really know much about him, but what he does is pretty awesome.
Worst: Any Overweight/Oversized character, I don't want the elevator to drop, even if it was someone cool, they'd have to be able to hover off the ground for me to let them in, but then again, if they could do that, why take the elevator?
Honorable Mention
Alex Mercer (I like him, but I just don't want a bear hug from him.)
Lightning (Which one?)
War (Darksiders, angsty brick man, yes, I did play the game.)
Wario (It'd be cool to play minigames in an elevator, no matter how pointless.)
Nuke Dukem man. (If he's in the elevator, I'm never getting out.)
Jim Raynor (Bwah?)
James (Silent Hill 2, you go, Wooden Plank man!)
Shepherd (Not the commander, the Lieutenant General.)
Soap (Yeah, Mowhawk Soap)
Snake (I get to listen to codec calls? Fun!)
TOO COOL TO BE IN AN ELEVATOR.
Laser Cat. No, seriously, Laser Cat.