Clyde Shelton

"I'm going to bring the whole system down on your head. It's going to be biblical."

- Clyde Clyde Shelton is the main antagonist of the 2009 thriller film Law Abiding Citizen, being a former family man who murdered several "evil" police officers and criminals in an attempt to get rid of the justice system's corruption.

He is portrayed by Gerald Butler.

History
After retiring from his job as a weapons developer, Clyde enters into a happy life with a wife and their young daughter. However, this was tragically cut short when a ruthless criminal named Clarence Darby and his accomplice Rupert Ames broke into Shelton's house, restrained him, and murdered his wife and daughter in front of his eyes. Though the two were rightfully caught, prosecutor Nick Rice (the protagonist of the film) was forced to make a deal with Darby; let Darby off with only a few years of prison time while Ames was to be executed, since the evidence is not enough to make a full conviction against Darby and that Rice doesn't want to risk lowering his 99% conviction rate if he loses. This unfairness left Shelton extremely betrayed by the justice system, as it twisted Clyde's mind into a dangerous sociopath ten years later where he kidnapped and savagely murdered Darby in revenge for his family's demise. Later, he purposely sabotaged Ames' execution machine to make his intentionally painless death much longer and agonizing. Despite Clyde being caught red-handed, he still used his dangerously intelligent mind to cleverly murder the entire police team responsible for Darby's commuted sentence, all within his solitary cell and in an attempt to straighten out the corrupted justice system by making deals with Rice and playing mind games with him.

With only Rice remaining after several of his aides are killed by a drone built by Shelton, the latter attempts to finish off his master plan by using a secret tunnel to get into his base and plant a bomb in City Hall, hoping to kill the Mayor and her aides. Rice later finds out that Shelton had deliberately got himself to be put into solitary confinement so that he can sneak out to his lair, which may explain how he had committed the murders. After secretly returning to his cell, Clyde is surprised to see Rice waiting for him, having caught wind of his plan and berating him for spreading the pain he suffered to everyone. Rice then tells Shelton about the effects of one's decision that will affects the lives of others. At that point, Clyde offers to strike another deal, but Rice refuses and states that he's done making deals with murderers, admitting that he does regret making the deal with Darby and acknowledging Clyde for teaching him a lesson about it. Though Clyde is filled with joy and delight that he finally cleansed Rice of his "rotteness", he still activates the bomb to set off. However, his happiness is cut short when he realizes that the bomb was secretly planted in the prison Clyde resided in at the last minute. As Rice sprinted out of the jail, Clyde finally sees that he has lost as he looks at a bracelet that his daughter once made before she died. As such, Clyde accepts his fate as the bomb sets off, destroying his cell and killing him instantly.