The movie is about the merc with a mouth called Deadpool.

Deadpool is a comic character that breaks the 4th wall, ALOT. In this movie, he gets his own origin story. He is recruited to test a new drug, after he gets cancer. Then he proceeds to kill everyone involved. Oh yeah he also gets the girl.

Here's a list of some of the characters

• The one and only god Deadpool
• The Girl
• The cleaning solution
• Discount X-men
• Other Secondary Characters