Billy Bickle

Billy Bickle is the deutragonist and anti-hero of the 2012 comedy-crime movie Seven Psychopaths. He is an extremely complex character in the way that he is a mixure of good and evil that yet wants to be a good friend of Marty and Hans. He is anti-heroic in the way that he he kills criminals, yet he kidnaps dogs and return them to their owners as if he found them and collect the reward for a living. He was portrayed by Sam Rockwell.

Biography
Billy makes a living by kidnapping dogs and collecting the owners' rewards for their safe return. Billy and Hans steals a Shih Tzu named Bonny that happens to belong to the wrathful crime lord Charlie Costello. Charlie's thugs, led by Paulo, discover Hans' connection to the kidnapping. They threaten to kill Marty and Hans, but Billy, disguised as the "Jack of Diamonds" killer arrives and kills the thugs.

Billy goes to Costello's house to meet his girlfriend, Angela, who is also Charlie's girlfriend. After Billy reveals to her that he kidnapped Bonny, she calls Charlie to tell him. When Billy finds out that Charlie killed Hans' wife Myra, he shoots Angela in retaliation. Charlie arrives at Billy's address and discovers many packs of playing cards with the jack of diamonds missing, and realizes Billy is the "Jack of Diamonds" killer.

When Marty, Billy, and Hans leaves the city with Bonny, Billy suggests to Marty that "Seven Psychopaths" should end with a shootout between the psychopaths and Charlie's forces.

Billy, with Bonnie in tow, waits for Charlie to arrive, as he expects to have a climactic shootout. Charlie arrives alone, without a weapon apart from a flare gun. Billy shoots Charlie, but don't hit any important organs. While Marty drives away with Charlie, intending to take him to a hospital, Billy realizes the flare gun's purpose and fires it.

Charlie and his thugs heads towards the signal where Billy is waiting, holding Bonny hostage. Charlie releases Marty and shoots Billy in the head just as the police arrive, but Bonny stays at the dying Billy's side.

Personality
As stated before, Billy is a very complex character being a mix of good and evil. Billy is a rare case of being a mixure of affably evil and psychopathic with some anti-heroic traits.