BEWARE OF SPOILERS. Due to the nature of the show, with its many Walking Spoiler characters, twists, and turns, the only spoilers whited out are those for the current season "24: Live Another Day". Proceed with caution!
A businessman with military and intelligence ties. He was hired to assist the terrorist group Second Wave to detonate a nuclear bomb in Los Angeles.
- Beard of Evil: Sports a goatee, and is clearly evil.
- Big Bad: Of Day 2. He is the mastermind behind a conspiracy to start a war between the U.S. and the Middle East that serves as the arc's primary source of conflict.
- Corrupt Corporate Executive: He's a highly successful businessman, trying to increase his success by detonating a nuclear bomb in Los Angeles.
- The Man Behind the Man: He's the manipulator behind Syed Ali.
- The Sociopath: Kingsley kills easily with no hesitation, shows little to no emotion and is only after personal gain.
- Typecasting: Gee, who would've guessed Jigsaw was a villain? This is only in retrospect of course, since the first Saw film didn't come out until a year after Day 2 had aired.
An international arms dealer and sponsor of terrorism. In Season 2, he is revealed to be the principal financier of Peter Kingsley's plot to trigger a war between the U.S. and the Middle East. He also serves as the main antagonist of 24: the Game. Trepkos was one of his associates.
- Arms Dealer: His profession.
- Greater-Scope Villain: It is his immense wealth and terrorist connections that make Peter Kingsley's plot possible in the first place. .
- The Man Behind the Man:It is he who contracts Peter Kingsley to plan a terrorist attack against the United States.
An associate of Max.
The Captain of the Special Ops group Coral Snake, secretly working for Peter Kingsley.
- Spanner in the Works: For Roger Stanton and Peter Kingsley. Stanton wasn't expecting Wallace to kill the Coral Snake unit and Kingsley didn't expect him to survive his ambush and contact Jack.
- You Have Outlived Your Usefulness: He killed the rest of the Coral Snake unit to prevent them from stopping the nuke. After the nuke safely exploded in the Mojave, Kingsley had Wallace tracked down and silenced.
- Cruel and Unusual Death: He would have had a slow, agonizing death from the drug he was injected with, had Jack not given him a Mercy Kill in exchange for him naming his employer.
- Hoist by His Own Petard: Doubly so, since the doctor — whose nurse O'Hara casually killed a short while earlier — ordered to inject Jack with a lung-paralysing drug ends up injecting O'Hara instead, condemning him to what would have been a slow, painful death.
- Klingon Promotion: Technically it's authorized by Kingsley, but he's perfectly happy to shoot Stark dead when ordered to take over the interrogation.