I suppose I must join.
I know some necromancy (having read the infamous Necronomicon), but really my powers are about what my username would suggest. Which will relegate me to lackeyhood, again, I suppose with a sigh.
Non-Lethal Disease Man!
Count of the Common Cold!
Inquisitor of Influenza!
Lord of leprosy!
At your services.
Oh, and I’m a dragon.
Sign me up! My specialty is constructing unnecessarily complicated torture devices and execution machines. Some of my past work has included:
[ul][li]Slow-moving lasers and other cutting devices with accompanying restraint tables[/li][li]Slow lowering devices for acid vats, lava pits, etc.[/li][li]The Torso Track[/ul][/li]I also make a dandy cup of coffee. I have references available upon request.
I volunteer to shoot denbo now - the last thing we need are more reasons for people on the web to write “when I am an evil overlord” tracts…
::Grrr:: Slow moving indeed. Just drop 'em on in there, I say.
Puny mortals.
You hope to depose me with your bumbling antics? You claim to be evil and despotic, but none can hope to match, let alone overthrow, my bloody reign.
I command legions of cybernetic warriors taller than a giraffe that ride into battle atop winged daemons that make the bravest men weep. I hold power over the most demented and twisted dimensions ever discovered, and all their denizens bow to me.
I have passed the Fire Trials of Calzar, I have overcome the Challenge of the Kro-beasts of Zirbok III, and I have slain the Sacred Mardis of the Holy Valley.
Thousands of heroes have attempted to vanquish me, and all have failed. An equal number of maidens have thus been forced to marry me.
I have masted all of the mad sciences, such as necromancy, immortality, and television. I have the greatest Doomsday weapons ever created at my disposal.
I have done all this, but I have very few friends with similar interests.
Count me in.
Bah. I represent the greates evil this century has ever known. Communism.
I can insite the masses to revolt, while at the same tiem we hold the reins of power.
heeeheeehee
I must join. To once again relive the foul vapors wafting from beakers, to peek at the fungi project in the cellar. The homemade fireworks, the glorious flames, oh, oh, oh! (Excuse me a moment…) Anyway, Sn-man AKA “Alfred the LSD Scientist” at your service. 
I have an unnatural influence upon the engines of technology. I am a master of weaponry–from the lowly 8 1/2 X 11 sheet of paper to true doomsday devices. I am subtle, devious, and capable of laughing maniacally while still paying attention to current events!
I already wear all black. All the time.
I would be pleased to join with my fellow villains in any attempt at world domination.
<At least until such time as I choose to assassinate them and wield ultimate power myself…heh heh heh heh Bwuh ha ha ha haa HAHAHAHAHAHAHA…>
I’m in - hell, I work for a government contractor. I already KNOW evil. (I know at least Balance gets that joke…) 
Okay, this is good. We’ve got enough villains for a softball team, we have a proposed hideout location (Hoboken), we have a few henchmen, we have someone with nacho power. It is time to begin.
How, then, should we sieze power?
Secret infiltration of evil government agencies like the IRS and the DMV?
Begin R&D on mind-control drugs?
Train an army of attack rats to do our bidding?
I open the floor to suggestions.
Well, let’s start with the basics: Sieze control of all Oceanic transport. With the ships and planes in our possesion the flow of materials will grind to a halt and boost our supplies.
Hey, we may be evil, but at least we’ve got some self-respect. Yuck.
This may be useful in the future, but where’s the instant gratification?
Now we’re getting somewhere. Given the areas of expertise of our membership, though, perhaps we should use gerbils?
The gerbils are going to be strictly occupation forces, though. First, we must enclose Hoboken and loft it into orbit. From this position of power, we will threaten the world with annihilation by doomsday weapon (or threaten selected areas with a visit from Hoboken itself) unless all national governments submit to our rule!
<interrupts self to listen to 1-year old consultant>
What?! We don’t have a doomsday weapon?!
<hits call button>
All mad (or even slightly annoyed) scientists to the staff room immediately!
<mutters to himself>
No doomsday weapon. Not even one with a honkin’ big red prominently labeled self-destruct button. What kind of operation is this? Well we’ll fix this. They’ll build us a weapon or never have one of their little techie-toys work again!
<door hisses open; APB9999, Myrr21 enter>
APB9999, here’s your chance. I want a DDD (DoomsDay Device) with no damn self-destruct mechanism before this town reaches LEO. Myrr21, I know you’re busy with your armies, but mentor him as much as you can, he’s new at this. Fail me and I will jinx your internet connection.
End Of Line.
Need a hired gun?
Wait, wait - you have to let me join, too. I already have my own push-up bra. I’m willing to sleep with the hunky would-be hero, too. However, instead of falling for him and screwing up your plans, I have no qualms about waiting for him to fall into blissful sleep and putting a bullet in his brain. That way I don’t have to wonder whether he’ll call me the next day.
Yes Masterrrrr
Do you have anybody that you need henched?
Need a test subject to make the ultimate warrior?
I am yours Masterrrr do with me as you will.
Not to worry, good people of Hoboken! If these foul villains do set up their evil HQ here, my Superhero League (our HQ hidden under an inpenetrable dome of hypersteel) will make short work of them. I, the Crimson Tape, promise this. [cue heroic music]
There are good people in Hoboken? What are they doing there? If you wanna be a hero, go help them move someplace interesting!
<speaks to allies and henchbeings>
Fool! He’ll probably insist on forms in triplicate for each of them, swiftly alienating the populace and driving them to the Dark Side. I smell MINIONS!
Crimson Tapeworm? What?
::Sigh:: Hey, boss…we got [disgust]heroes[/disgust] to worry about.
Remember, don’t gloat over the plan in their hearing this time, okay? Please?
Heroes?
It could be worse. I know a hero whose Magic Ring gives him power from the Sun. The symbol that appears on his uniform is an ancient sign of good luck and the Sun. He never goes out in public. He’s a little embarrassed to be “Captain Swastika”.
I, however, have a tee-shirt that says “Evil Geniuses for a Better Tomorrow”.
Hey boss? You want me to use my consulting skills to take over the government, since I already do all their FREAKING WORK anyway?