Phnord Prephect
[nit]
It was Zarniwhoop who was on an intergalactic cruise in his office.
[/nit]
He was also apparently ‘too cool to see you now’ but Zaphod out-cooled him.
St. Anger, It wasn’t just me then with the Angels from Captain Scarlett. I have friends of the other gender who felt the same about Virgil and/or Scott from Thunderbirds. Oh dear.
I’m voting for Wintermute.
Spock, without a doubt, cool in every sense.
Sorry, St. Anger, wood doesn’t automatically equal cool in my book anyway…
[nitpick]
You mean the HAL 9000.
[/nitpick]
Daisy, daisy, give me your answer do…
Not on your life, pal. I hated “Wastely”. I despise the entire over-used TV concept of the brilliant child who shows up the highly trained adults.
Starbuck and **Han Solo ** fueled this young girl’s dreams…
So far G’kar and Ivanova have been mentioned from Babylon 5 , which in my opinion are good choices , but however they have take second and third place , to the ultimate in cool, in the babylon 5 universe
The honor of number one , goes to
Zathr’as
Declan
Han Solo, Star Wars - Pretty much the model for every “arrogant space pirate mercenary” in every movie to follow.
John Crighton, Farscape - Speaking of… basically a modern Han Solo
“Spike” Spiegle, Cowboy Bebop - It’s nice to see an anime hero who isn’t a screetching girl or 5 fifteen year old boys. Besides, who doesn’t hate kids, animals and women with attitudes in their personal shit?
Lando Callirisian - Who can resist the cool smoth taste of the first black man in space?
Starbuck, Battlestar Galactica - Basically “Face” in space
Capt James T Kirk, Star Trek - I…CAN’T…stop…talking…like THIS. He womanizes. He’s quick with the phasers and photon torpedos. What’s not to like.
Lt. Jean Rasczak, Starship Troopers - I guess he’ll do at number 6 until I find someone better…or he’s dead.
Agent J, Men in Black - Hey…he makes this shit look good.
9 tie ) “Mad” Max, “Snake” Pliskin, Escape From NY - Pretty much the last word on angry loners who walked out of the wasteland
I guess I never considered AoD a sci-fi flick. But if it is up for nomination, move over Snake, Ash is here with his boomstick!
If we get to include computers and their software, lemme ante up Max Headroom, Lawnmower Man, and Sid 6.7.
Max Headroom remains the coolest!
Forget what I said before.
Bender The Robot, Futurama - What’s cooler than a robot that runs on beer and steals?
I like smart men and bad boys, and the aforementioned Kerr Avon was all that and a bag of chips.
Severus Snape, of Harry Potter fame, does it for me for similar reasons.
Spike, of course, but also Angel’s Wesley Wyndham-Pryce.
Plus, he almost had actual sex, in 1986, ON AN AMERICAN CARTOON. And if THAT isn’t cool, I don’t know what is. And that’s not even bringing up the whole interracial thing. 
Bolt Crank, from Eat Man ‘98, is saddled with a goofy power, (he can eat anything, then re-create it out of his hand) and a goofy wardrobe (about 15 layers of green cloth, a green yarmulke, and Buddy Holly sunglasses) and he still manages to be utterly cool.
To say nothing of the goofy situations he has to endure. Anybody can be cool while turning around and slowly walking away from a giant explosion if they’re wearing a long coat that blows forward dramatically. It takes something more to be cool while cutting a truck in half with a ‘magic’ sword, that you had to cough up because it was giving you ‘indigestion,’ defending a woman who might be a prostitute, and a goofy old man giving the truck’s driver a lecture on not being evil. In the aforementioned bright green outfit.
Besides, he’s got one of those ‘honorable mercenary’ ethical codes, and a really, really deep voice that he almost never uses. Always a winning combination.
The original Bubble Gum Crisis’ Largo. Pretty much the acme of 80’s anime bad guys. I respect a man who can maintain a God complex without giggling to himself. Raw power? Check. Aside from having his asskicking super-boomer form, he was mentally linked to orbital satellite weapons letting him call down particle beams from the sky. He took on the most powerful megacorporation in the world, with no help besides an android sex toy, (somebody’s gotta drive the car) and came within about half a step of taking it over.
Proper coldblooded, manipulative attitude? “Is it dead yet? I suppose I should say, ‘Has it stopped functioning.’ It is a machine, after all. Oh, is this hurting you? Well, it’s not like you can do anything about it now.” Check.
Plus, he actually managed to kill the heroine, which is pretty impressive for any villain. (Though she was resurrected at the last minute by fan pressure. Fans ruin everything) And he ripped off the last scene from Lone Wolf and Cub. Man knows his classics. Also, he can fall straight down the side of a pyramid. Lets see Spock do that.
Jean-Paul Rochina, from VOTOMS, was pretty cool. Not the coolest ever, but probably the coolest French guy ever. By far the coolest guy to ever be called John-Paul, anyway.
–
“For the crime of injuring me, a god, I demand, as atonement, death.” How can you NOT love this guy?
That’s one cool Fokker.
I would have to say Automan from the TV series. No, just kidding.
But I do think Brad Dourif’s character, Luther Lee Boggs, in the X-Files first season episode Beyond the Sea was one of the best “villains” in the whole series. He creeps me out every time I watch it.
Also, I’m quite fond of Max (Jessica Alba) in Dark Angel. That vote is based purely on lust. 
Personally, Jack Nicholson’s Joker is one of my favorite movie villain characters.