Deadpool is the outcome of an experiment much like Wolverine. His only real super power is to regenerate his body at ridiculously fast rates, making him near indestructible.
But his regeneration is imperfect, practically growing cancers all over his body, which is why he looks like Freddy Crougar and why he wears the suit all the time. It has also caused him to go absolutely insane, SO insane he can see passed the 4th wall. He knows he's a character in a comic book and he has conversations with the inner thought and narrator text boxes. And yeah.. like everyone else said, he is usually a full time mercenary (antihero) he normally does not care for the good or bad of anyone, he just does it for the money. There are some instances where he's kinda the good guy but it's all just depends on the situation.

Sounds pretty sweet, I've ordered some comics from Amazon!

He's technically an antihero, because he does do good things (Occasionally, and if it benefits him too), he's also the enemy of a lot of super heros

He's more of and antihero. And check out Cable and Deadpool too

AGH!!! You must be educated in the ways of Deadpool immediately!!!
Get yourself near comic books and go! Deadpool is the meaning of logic and insanity at the same time!

Ahh okay!!! I've never actually been a comic book guy, is there a website where I can read some or do I have to actually buy them?

Which ones do you recommend?

Check out Deadpool Kills Marvel Universe. It is a 4 issues series.

Marvel Zombies 3-4 are fantastic. A lot gory, but Deadpool is in it but it's fine. It's fine it's fine it's fine.

I'll check it out