I doubt (m)any of you have seen him.
I'm guessing I already know his type, but I'll still throw it out there to see what anybody else thinks.
Col. Steven Caldwell, a satellite character from the science fiction series Stargate: Atlantis
Why I like him: He's good - as in, a good person. He's not the most pleasant, jovial, friendly guy, which seems to annoy some of the other characters. If he disagrees he'll say it and not always diplomatically, though I think he's polite enough. He has opinions on what is the right thing to do and his reasons are always legitimate, imo, even if other people (or the supposed audience) disagree with him. He's pragmatic, a no-nonsense kind of guy. He takes his responsibilities seriously, like looking out for the lives of the people who work for him. It seems he's always running around cleaning up the other characters' messes. He's reliable. Something that gets him in trouble with the other characters is when they want him to do something for them and he says he can't because he doesn't want to risk personnel or equipment. When he does go along with them, though, he does everything right. They'd all be dead several times over right now if it weren't for him, but he never gets any credit. And he's (usually) ok with that. The main thing with him is getting the job done. The job, in this case - keeping humanity safe within the context of the military.
Sometimes I just want to hug him.
Negative qualities: ... Can't think of any. Except that he's fictional.
[EDIT: Cut out the videos because they no longer work.]