Clock King

Clock King is the name of two supervillains who have fought Green Arrow and Batman regularly

William Tockman
William Tockman was a man who took care of his crippled sister most of his life, however when he discovered he only had six months to live he became concerned about what would happen to her. He became the criminal Clock King to make a fortune to provide for his sister after he died. However he was caught in his first bank robbery by Green Arrow. While in jail his sister died alone, meanwhile he also learned that his doctor made a mistake and he was not terminally ill. He attempted revenge on Green Arrow, but failed miserably. He then joined the Injustice League, a team of down and out supervillains who were actually worse working together then individually. He and several other members tried to reform by becoming the superhero team Justice League Antarctica, but they remained laughing stocks even as heroes. He would later form his own team of supervillains to fight the Teen Titans, but ultimately failed their as well. He would eventually join the Suicide Squad and apparantly died during the Infinite Crisis saga.

Temple Fugate
Temple Fugate was a far more dangerous villain then Tockman. He had the ability to see four seconds into the future. He was also a technological genius who lead a villain team called the Terror Titans. His group first kidnapped teen titan member Kid Devil and brainwash him to fight in an illegal club called, "The Dark Side." The Titans manage to save Kid Devil. Later Clock King took over The Dark Side Club and used the metahuman fighters to attack Los Angeles solely for his own amusement. Miss Martian managed to infiltrate the club and stop him.

Batman TV series (1960s)
Clock King appears in a two part story attempting to steal several surrealist clock paintings. After this plan is thwarted he traps Batman and Robin inside a giant hourglass as he tries to steal Bruce Wayne's pocket watch collection. He then attempts to steal an atomic powered clock, but he is defeated yet again.

DC Animated Universe
The Temple Fugate version of Clock King appears in Batman the Animated Series. He was an obsessive compulsive man who planned every second. When Hamilton Hill met him on a train and convinced him to try being spontaneous, he ends up missing an important court date costing him his clock company. Fugate tries to get revenge on Hamilton Hill by killing him, but Batman manages to stop him. He later returns with a pocket watch that allows him to speed up and slow down time. He is defeated yet again by Batman and Robin. He later joins Task Force X in order to get a pardon for his crimes.

Batman: The Brave and The Bold
The William Tockman version appears in this series. Here he has two henchmen named Tick and Tock. He attempted to defeat Green Arrow and Batman, but is defeated. He later tries to escape from prison but is once again stopped by Batman and Green Arrow. he later teams up with Owlman but is again defeated. He, Gorilla Grodd and Black Manta fall victim to Music Meister's mind control voice.