Conon the Pacifist: He's a barbarian. He's big. He's strong. And he has a unwavering respect for the sanctity of all life and has foresworn all violence. Straw hat and carpentry skills are optional.
The Mime: He's a bard that refuses to make a sound and thinks getting attacked is a great oppurtunity for pantomine slapstick humor.
The Retro Magic-User: He's a wizard, and he's got 15 intelligence. Unfortunately, he also has 1 hit point, no armor, a dagger, can only cast one spell a day, and the only spells he knows are: Message, Read Magic, Ventrioloquism, and Write.
Lucky Lem, the Pirate: You have wooden peg where your leg was taken off by a cannon ball. You hand was eaten by a crocodile, leaving you with just a hook. You lost one eye to a boarding axe that split your face and left you missing half your teeth and horribly scarred. And you're hard of hearing from that one incident with the keg of black powder that no one wants to speak about. After all that, you have to be lucky to still be standign.
The Martyr: You have the power to inspire and motivate your friends to new heights of courage. The only problem is that they only get inspired when you die. (Note: You can actually play this character in my house rules.)