Hated by humans and other vampires alike, and in his eyes forsaken by the God that he spent his whole mortal life devoted to, Alexis is a self-hating Vampire.
By night this young woman takes the shape of a huge mosquito the size of a dog, and flies around looking for people to feed on. She has the ability to split apart into a cloud of small mosquitoes to fly under doors and through any small cracks and holes in a house, and then reforms and is able to puncture mosquito nets to feed on her victims. If she gets into a fight and starts losing, she will split apart again and fly away to make her escape, and as long as even one of those mosquitoes gets away unharmed, she will turn into her human form at dawn and regain all her strength and vampiric powers by dusk. Those that she bites are likely to come down with disease afterwards.
"I pick your fleas, you pick mine. Well, that would be if either of us had fleas. Haha, right?"
30 gangsters of various types, from the boss to the wannabe, the biker gang member to the despised turncoat, and many more.
"Me? Oh, I’m no one of importance. Say, where are you folk heading? Really? Might I tag along for safety’s sake? I have business there…"

Never judge a man until you’ve walked a mile in his shoes.

12. Deacon Rogue from [30 Brigands]
No one knows this former Holy Man’s name as he forsook the church and the cloth for some reason. Most suspect heresy, and the Deacon’s combat skills with the warhammer and glaive persuade them not to ask too closely. A guarded and quiet man filled with unholy rage.

(30 Flesh Peddlers) The Sexual "Ninja", An alluring beauty of foreign decent attracts the rich and powerful with deadly results…

21. Mermaid’s Husband
This pirate has some sort of odd trinket he claims came from his mermaid wife. It is likely a ring of shell or some other trinket or bauble. Oddly, this pirate is able to stay underwater far longer than he should. The trinket gives him the ability to breath underwater so long as he is true to his aquatic wife.
Baugl, lost in the darkness beneath Hydra keep. Would that he had stayed in the shadow.

"I can acquire the item you seek, for a price… No I assure you the presence of dark tainted evils will in no way impede my ability to recover this artifact for you, now let’s discuss the details…"
(A character for the Warhammer Fantasy rpg setting, but can be easily adapted to any fantasy setting.)

"What was i supposed to do it was just lying their!"
"Honest"
From the shadows sneak thirty secret agents, on the trail of top secret infomation.
-Heroes scatter under barrage of grey energy spheres-
"You know kids, you didn’t mind when Captain Liberty took you down. He did it with honor, with respect, and followed the rules. Not you kids today. For you, it is all about The Power. Just as soon shoot you as take you in. And really young lady, would your mother approve of that costume? Not that the rest of you dress much better. What standard are you idiots setting for the young kids of today?"
-thwack-
"Get up. Don’t you have any pride? A novice should have been able to avoid that attack. You have a total lack of grit. Don’t lie there and moan. Get up. And that surprise maneuver you two are attempting. I have to tell you, not so much of a surprise. Now, stop standing there wide eyes and slack jawed. Do something. "
"You are heroes for Gods sake. Start acting like it."

"I wish ‘ere were some way a bloke could pick up business in dis dreary ol town…Oh wait!
"The Dark One, he looks like anybody you see on the street. But when he grins, birds fall dead off high places. When he looks at you a certain way, your humors freeze and your urine burns. The grass yellows up and dies where he spits. He’s always outside. He came out of time. He doesn’t know himself. His names are legion as are his faces. He’s afraid of us. He is always on the outside looking in; hating people who have good fellowship and good conversation and friends - things he can not have. We’re inside. He knows magic. He can call the Night Beast and live in the shadows. He’s the king of nowhere. But he’s afraid of us. He’s afraid of . . . inside." The Book of Cauldius, found in the Royal Archive 828 by Arthurus the Wise

30 Assassins, both great and pathetic. - Die, by our hands…
Jade Alksnis was born a princess of the highest rank, and none of the Canbu tribe to which she belonged could have dreamed of the disaster that her birth would bring to her people. Had they known what she would do to them, they would put her to death by freezing when she was just a baby. Her very name is now equaled with the word "traitor".